139634055 has 24 divisors (see below), whose sum is σ = 264036240. Its totient is φ = 67701120.

The previous prime is 139634051. The next prime is 139634057. The reversal of 139634055 is 550436931.

139634055 is a `hidden beast` number, since 13 + 9 + 634 + 0 + 5 + 5 = 666.

It is not a de Polignac number, because 139634055 - 2² = 139634051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139634051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 140550 + ... + 141539.

It is an arithmetic number, because the mean of its divisors is an integer number (11001510).

Almost surely, 2^139634055 is an apocalyptic number.

139634055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

139634055 is a deficient number, since it is larger than the sum of its proper divisors (124402185).

139634055 is a wasteful number, since it uses less digits than its factorization.

139634055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282111 (or 282108 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

The square root of 139634055 is about 11816.6854489743. The cubic root of 139634055 is about 518.7965946437.

The spelling of 139634055 in words is "one hundred thirty-nine million, six hundred thirty-four thousand, fifty-five".