139490697541924 has 9 divisors (see below), whose sum is σ = 244108762035537. Its totient is φ = 69745336960344.

The previous prime is 139490697541907. The next prime is 139490697541933. The reversal of 139490697541924 is 429145796094931.

The square root of 139490697541924 is 11810618.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 104510097028324 + 34980600513600 = 10223018^2 + 5914440^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 20668582 + ... + 26573890.

Almost surely, 2^{139490697541924} is an apocalyptic number.

139490697541924 is the 11810618-th square number.

It is an amenable number.

139490697541924 is a deficient number, since it is larger than the sum of its proper divisors (104618064493613).

139490697541924 is an frugal number, since it uses more digits than its factorization.

139490697541924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11810622 (or 5905311 counting only the distinct ones).

The product of its (nonzero) digits is 529079040, while the sum is 73.

The spelling of 139490697541924 in words is "one hundred thirty-nine trillion, four hundred ninety billion, six hundred ninety-seven million, five hundred forty-one thousand, nine hundred twenty-four".