6379439040 has 672 divisors, whose sum is σ = 25903488960. Its totient is φ = 1472200704.

The previous prime is 6379439039. The next prime is 6379439041. The reversal of 6379439040 is 409349736.

6379439040 is a `hidden beast` number, since 637 + 9 + 4 + 3 + 9 + 0 + 4 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (6379439039) and next prime (6379439041).

It is a super-2 number, since 2×6379439040² = 81394484930152243200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6379439041) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 24822592 + ... + 24822848.

Almost surely, 2^6379439040 is an apocalyptic number.

6379439040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6379439040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12951744480).

6379439040 is an abundant number, since it is smaller than the sum of its proper divisors (19524049920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6379439040 is a wasteful number, since it uses less digits than its factorization.

6379439040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326 (or 297 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 45.

The square root of 6379439040 is about 79871.3906226754. The cubic root of 6379439040 is about 1854.6451604148.

The spelling of 6379439040 in words is "six billion, three hundred seventy-nine million, four hundred thirty-nine thousand, forty".