139344774 has 8 divisors (see below), whose sum is σ = 278689560. Its totient is φ = 46448256.

The previous prime is 139344769. The next prime is 139344827. The reversal of 139344774 is 477443931.

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

139344774 is an admirable number.

It is a super-2 number, since 2×139344774² = 38833932082222152, which contains 22 as substring.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 11612059 + ... + 11612070.

It is an arithmetic number, because the mean of its divisors is an integer number (34836195).

Almost surely, 2^139344774 is an apocalyptic number.

139344774 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

139344774 is a wasteful number, since it uses less digits than its factorization.

139344774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23224134.

The product of its digits is 254016, while the sum is 42.

The square root of 139344774 is about 11804.4387414227. The cubic root of 139344774 is about 518.4380819194.

The spelling of 139344774 in words is "one hundred thirty-nine million, three hundred forty-four thousand, seven hundred seventy-four".