38979453240 has 384 divisors, whose sum is σ = 156260482560. Its totient is φ = 8206175232.

The previous prime is 38979453229. The next prime is 38979453263. The reversal of 38979453240 is 4235497983.

38979453240 is a `hidden beast` number, since 3 + 89 + 79 + 453 + 2 + 40 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 19229107 + ... + 19231133.

It is an arithmetic number, because the mean of its divisors is an integer number (406928340).

Almost surely, 2^38979453240 is an apocalyptic number.

38979453240 is a gapful number since it is divisible by the number (30) 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 38979453240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78130241280).

38979453240 is an abundant number, since it is smaller than the sum of its proper divisors (117281029320).

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

38979453240 is a wasteful number, since it uses less digits than its factorization.

38979453240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2651 (or 2644 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 54.

The spelling of 38979453240 in words is "thirty-eight billion, nine hundred seventy-nine million, four hundred fifty-three thousand, two hundred forty".