138944796 has 24 divisors (see below), whose sum is σ = 341268480. Its totient is φ = 43877232.

The previous prime is 138944789. The next prime is 138944797. The reversal of 138944796 is 697449831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138944797) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304476 + ... + 304931.

It is an arithmetic number, because the mean of its divisors is an integer number (14219520).

Almost surely, 2^138944796 is an apocalyptic number.

It is an amenable number.

138944796 is an abundant number, since it is smaller than the sum of its proper divisors (202323684).

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

138944796 is a wasteful number, since it uses less digits than its factorization.

138944796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609433 (or 609431 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 51.

The square root of 138944796 is about 11787.4847189721. The cubic root of 138944796 is about 517.9415615614.

The spelling of 138944796 in words is "one hundred thirty-eight million, nine hundred forty-four thousand, seven hundred ninety-six".