139459674249 has 27 divisors (see below), whose sum is σ = 234343378893. Its totient is φ = 79686761112.

The previous prime is 139459674227. The next prime is 139459674253. The reversal of 139459674249 is 942476954931.

The square root of 139459674249 is 373443.

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

139459674249 is a `hidden beast` number, since 1 + 39 + 4 + 596 + 7 + 4 + 2 + 4 + 9 = 666.

It is not a de Polignac number, because 139459674249 - 2⁷ = 139459674121 is a prime.

It is a super-4 number, since 4×139459674249⁴ (a number of 46 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (139459674209) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 7833412 + ... + 7851194.

Almost surely, 2^139459674249 is an apocalyptic number.

139459674249 is the 373443-rd square number.

139459674249 is the 186722-nd centered octagonal number.

It is an amenable number.

139459674249 is a deficient number, since it is larger than the sum of its proper divisors (94883704644).

139459674249 is an frugal number, since it uses more digits than its factorization.

139459674249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35586 (or 17793 counting only the distinct ones).

The product of its digits is 58786560, while the sum is 63.

The spelling of 139459674249 in words is "one hundred thirty-nine billion, four hundred fifty-nine million, six hundred seventy-four thousand, two hundred forty-nine".