7739398938 has 32 divisors (see below), whose sum is σ = 16163338752. Its totient is φ = 2465870000.

The previous prime is 7739398921. The next prime is 7739398943. The reversal of 7739398938 is 8398939377.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180913 + ... + 219563.

It is an arithmetic number, because the mean of its divisors is an integer number (505104336).

Almost surely, 2^7739398938 is an apocalyptic number.

7739398938 is an abundant number, since it is smaller than the sum of its proper divisors (8423939814).

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

7739398938 is a wasteful number, since it uses less digits than its factorization.

7739398938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40130.

The product of its digits is 61725888, while the sum is 66.

The square root of 7739398938 is about 87973.8537180224. The cubic root of 7739398938 is about 1978.0430736578.

The spelling of 7739398938 in words is "seven billion, seven hundred thirty-nine million, three hundred ninety-eight thousand, nine hundred thirty-eight".