139860144 has 30 divisors (see below), whose sum is σ = 391414556. Its totient is φ = 46620000.

The previous prime is 139860103. The next prime is 139860167. The reversal of 139860144 is 441068931.

139860144 is a `hidden beast` number, since 1 + 3 + 9 + 8 + 601 + 44 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 139860099 and 139860108.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 485482 + ... + 485769.

Almost surely, 2^139860144 is an apocalyptic number.

It is an amenable number.

139860144 is an abundant number, since it is smaller than the sum of its proper divisors (251554412).

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

139860144 is a wasteful number, since it uses less digits than its factorization.

139860144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971265 (or 971256 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 139860144 is about 11826.2480948101. The cubic root of 139860144 is about 519.0764474690.

The spelling of 139860144 in words is "one hundred thirty-nine million, eight hundred sixty thousand, one hundred forty-four".