139972095 has 24 divisors (see below), whose sum is σ = 248264016. Its totient is φ = 72914688.

The previous prime is 139972087. The next prime is 139972097. The reversal of 139972095 is 590279931.

It is a happy number.

It is not a de Polignac number, because 139972095 - 2³ = 139972087 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 139972095.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139972097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34234 + ... + 38103.

It is an arithmetic number, because the mean of its divisors is an integer number (10344334).

Almost surely, 2^139972095 is an apocalyptic number.

139972095 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

139972095 is a deficient number, since it is larger than the sum of its proper divisors (108291921).

139972095 is a wasteful number, since it uses less digits than its factorization.

139972095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72391 (or 72388 counting only the distinct ones).

The product of its (nonzero) digits is 153090, while the sum is 45.

The square root of 139972095 is about 11830.9803059594. The cubic root of 139972095 is about 519.2149087146.

The spelling of 139972095 in words is "one hundred thirty-nine million, nine hundred seventy-two thousand, ninety-five".