139293161 has 8 divisors (see below), whose sum is σ = 167570880. Its totient is φ = 113110128.

The previous prime is 139293157. The next prime is 139293163. The reversal of 139293161 is 161392931.

139293161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 139293161 - 2² = 139293157 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139293163) 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, 523526 + ... + 523791.

It is an arithmetic number, because the mean of its divisors is an integer number (20946360).

Almost surely, 2^139293161 is an apocalyptic number.

It is an amenable number.

139293161 is a deficient number, since it is larger than the sum of its proper divisors (28277719).

139293161 is a wasteful number, since it uses less digits than its factorization.

139293161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047343.

The product of its digits is 8748, while the sum is 35.

The square root of 139293161 is about 11802.2523697809. The cubic root of 139293161 is about 518.3740645703.

The spelling of 139293161 in words is "one hundred thirty-nine million, two hundred ninety-three thousand, one hundred sixty-one".