139194164 has 12 divisors (see below), whose sum is σ = 257918724. Its totient is φ = 65503104.

The previous prime is 139194163. The next prime is 139194197. The reversal of 139194164 is 461491931.

It can be written as a sum of positive squares in 2 ways, for example, as 86341264 + 52852900 = 9292^2 + 7270^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139194163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1023419 + ... + 1023554.

It is an arithmetic number, because the mean of its divisors is an integer number (21493227).

Almost surely, 2^139194164 is an apocalyptic number.

It is an amenable number.

139194164 is a deficient number, since it is larger than the sum of its proper divisors (118724560).

139194164 is a wasteful number, since it uses less digits than its factorization.

139194164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2046994 (or 2046992 counting only the distinct ones).

The product of its digits is 23328, while the sum is 38.

The square root of 139194164 is about 11798.0576367468. The cubic root of 139194164 is about 518.2512309749.

The spelling of 139194164 in words is "one hundred thirty-nine million, one hundred ninety-four thousand, one hundred sixty-four".