139046508 has 18 divisors (see below), whose sum is σ = 351478764. Its totient is φ = 46348824.

The previous prime is 139046483. The next prime is 139046527. The reversal of 139046508 is 805640931.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 3862403 = 139046508 / (1 + 3 + 9 + 0 + 4 + 6 + 5 + 0 + 8).

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 5 ways as a sum of consecutive naturals, for example, 1931166 + ... + 1931237.

It is an arithmetic number, because the mean of its divisors is an integer number (19526598).

Almost surely, 2^139046508 is an apocalyptic number.

139046508 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

139046508 is an abundant number, since it is smaller than the sum of its proper divisors (212432256).

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

139046508 is a wasteful number, since it uses less digits than its factorization.

139046508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3862413 (or 3862408 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 139046508 is about 11791.7983361318. The cubic root of 139046508 is about 518.0679139550.

The spelling of 139046508 in words is "one hundred thirty-nine million, forty-six thousand, five hundred eight".