38390739398 has 12 divisors (see below), whose sum is σ = 63297128580. Its totient is φ = 17450335980.

The previous prime is 38390739391. The next prime is 38390739463. The reversal of 38390739398 is 89393709383.

It is a self number, because there is not a number n which added to its sum of digits gives 38390739398.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38390739391) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 79319468 + ... + 79319951.

It is an arithmetic number, because the mean of its divisors is an integer number (5274760715).

Almost surely, 2^38390739398 is an apocalyptic number.

38390739398 is a deficient number, since it is larger than the sum of its proper divisors (24906389182).

38390739398 is a wasteful number, since it uses less digits than its factorization.

38390739398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158639443 (or 158639432 counting only the distinct ones).

The product of its (nonzero) digits is 26453952, while the sum is 62.

The spelling of 38390739398 in words is "thirty-eight billion, three hundred ninety million, seven hundred thirty-nine thousand, three hundred ninety-eight".