139785516 has 36 divisors (see below), whose sum is σ = 380528512. Its totient is φ = 43010784.

The previous prime is 139785491. The next prime is 139785521. The reversal of 139785516 is 615587931.

It is a happy number.

139785516 is a `hidden beast` number, since 1 + 3 + 97 + 8 + 551 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 148876 + ... + 149811.

Almost surely, 2^139785516 is an apocalyptic number.

It is an amenable number.

139785516 is an abundant number, since it is smaller than the sum of its proper divisors (240742996).

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

139785516 is a wasteful number, since it uses less digits than its factorization.

139785516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298710 (or 298705 counting only the distinct ones).

The product of its digits is 226800, while the sum is 45.

The square root of 139785516 is about 11823.0924888542. The cubic root of 139785516 is about 518.9841063439.

The spelling of 139785516 in words is "one hundred thirty-nine million, seven hundred eighty-five thousand, five hundred sixteen".