139597163 has 4 divisors (see below), whose sum is σ = 139664448. Its totient is φ = 139529880.

The previous prime is 139597151. The next prime is 139597201. The reversal of 139597163 is 361795931.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 139597163 - 2¹² = 139593067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139597103) 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, 30428 + ... + 34713.

It is an arithmetic number, because the mean of its divisors is an integer number (34916112).

Almost surely, 2^139597163 is an apocalyptic number.

139597163 is a deficient number, since it is larger than the sum of its proper divisors (67285).

139597163 is an equidigital number, since it uses as much as digits as its factorization.

139597163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67284.

The product of its digits is 153090, while the sum is 44.

The square root of 139597163 is about 11815.1243328202. The cubic root of 139597163 is about 518.7509010871.

The spelling of 139597163 in words is "one hundred thirty-nine million, five hundred ninety-seven thousand, one hundred sixty-three".