6949398464 has 84 divisors (see below), whose sum is σ = 14400867312. Its totient is φ = 3326929920.

The previous prime is 6949398461. The next prime is 6949398473. The reversal of 6949398464 is 4648939496.

It is a super-2 number, since 2×6949398464² = 96588278022891118592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is a junction number, because it is equal to n+sod(n) for n = 6949398397 and 6949398406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6949398461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6334364 + ... + 6335460.

Almost surely, 2^6949398464 is an apocalyptic number.

6949398464 is a gapful number since it is divisible by the number (64) 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 6949398464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7200433656).

6949398464 is an abundant number, since it is smaller than the sum of its proper divisors (7451468848).

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

6949398464 is a wasteful number, since it uses less digits than its factorization.

6949398464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1274 (or 1233 counting only the distinct ones).

The product of its digits is 40310784, while the sum is 62.

The square root of 6949398464 is about 83363.0521514178. The cubic root of 6949398464 is about 1908.3106380237.

The spelling of 6949398464 in words is "six billion, nine hundred forty-nine million, three hundred ninety-eight thousand, four hundred sixty-four".