139722723938 has 54 divisors (see below), whose sum is σ = 248265242433. Its totient is φ = 58804356240.

The previous prime is 139722723929. The next prime is 139722723991. The reversal of 139722723938 is 839327227931.

It can be written as a sum of positive squares in 2 ways, for example, as 94644215449 + 45078508489 = 307643^2 + 212317^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=264313.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 225722993 + ... + 225723611.

Almost surely, 2^139722723938 is an apocalyptic number.

139722723938 is a deficient number, since it is larger than the sum of its proper divisors (108542518495).

139722723938 is an frugal number, since it uses more digits than its factorization.

139722723938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376 (or 689 counting only the distinct ones).

The product of its digits is 6858432, while the sum is 56.

The spelling of 139722723938 in words is "one hundred thirty-nine billion, seven hundred twenty-two million, seven hundred twenty-three thousand, nine hundred thirty-eight".