139611423 has 16 divisors (see below), whose sum is σ = 220078080. Its totient is φ = 77026656.

The previous prime is 139611419. The next prime is 139611427. The reversal of 139611423 is 324116931.

It is an interprime number because it is at equal distance from previous prime (139611419) and next prime (139611427).

It is not a de Polignac number, because 139611423 - 2² = 139611419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139611427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114015 + ... + 115232.

It is an arithmetic number, because the mean of its divisors is an integer number (13754880).

Almost surely, 2^139611423 is an apocalyptic number.

139611423 is a deficient number, since it is larger than the sum of its proper divisors (80466657).

139611423 is a wasteful number, since it uses less digits than its factorization.

139611423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229286.

The product of its digits is 3888, while the sum is 30.

The square root of 139611423 is about 11815.7277812245. The cubic root of 139611423 is about 518.7685641394.

The spelling of 139611423 in words is "one hundred thirty-nine million, six hundred eleven thousand, four hundred twenty-three".