139955163 has 8 divisors (see below), whose sum is σ = 187146048. Its totient is φ = 93033864.

The previous prime is 139955147. The next prime is 139955209. The reversal of 139955163 is 361559931.

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

It is not a de Polignac number, because 139955163 - 2⁴ = 139955147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139955113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66181 + ... + 68262.

It is an arithmetic number, because the mean of its divisors is an integer number (23393256).

Almost surely, 2^139955163 is an apocalyptic number.

139955163 is a deficient number, since it is larger than the sum of its proper divisors (47190885).

139955163 is a wasteful number, since it uses less digits than its factorization.

139955163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134793.

The product of its digits is 109350, while the sum is 42.

The square root of 139955163 is about 11830.2647054071. The cubic root of 139955163 is about 519.1939719192.

The spelling of 139955163 in words is "one hundred thirty-nine million, nine hundred fifty-five thousand, one hundred sixty-three".