139597954 has 8 divisors (see below), whose sum is σ = 209452428. Its totient is φ = 69780480.

The previous prime is 139597937. The next prime is 139597961. The reversal of 139597954 is 459795931.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 130759225 + 8838729 = 11435^2 + 2973^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×139597954² = 38975177521972232, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3954 + ... + 17170.

Almost surely, 2^139597954 is an apocalyptic number.

139597954 is a deficient number, since it is larger than the sum of its proper divisors (69854474).

139597954 is a wasteful number, since it uses less digits than its factorization.

139597954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18500.

The product of its digits is 1530900, while the sum is 52.

The square root of 139597954 is about 11815.1578068175. The cubic root of 139597954 is about 518.7518808854.

The spelling of 139597954 in words is "one hundred thirty-nine million, five hundred ninety-seven thousand, nine hundred fifty-four".