139194055 has 96 divisors (see below), whose sum is σ = 237867840. Its totient is φ = 76769280.

The previous prime is 139194049. The next prime is 139194067. The reversal of 139194055 is 550491931.

It is a happy number.

It is not a de Polignac number, because 139194055 - 2⁵ = 139194023 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1015947 + ... + 1016083.

It is an arithmetic number, because the mean of its divisors is an integer number (2477790).

Almost surely, 2^139194055 is an apocalyptic number.

139194055 is a deficient number, since it is larger than the sum of its proper divisors (98673785).

139194055 is a wasteful number, since it uses less digits than its factorization.

139194055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 37.

The square root of 139194055 is about 11798.0530173415. The cubic root of 139194055 is about 518.2510956977.

The spelling of 139194055 in words is "one hundred thirty-nine million, one hundred ninety-four thousand, fifty-five".