139272445 has 16 divisors (see below), whose sum is σ = 180794880. Its totient is φ = 102383424.

The previous prime is 139272389. The next prime is 139272487. The reversal of 139272445 is 544272931.

It is not a de Polignac number, because 139272445 - 2⁷ = 139272317 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 10036 + ... + 19474.

It is an arithmetic number, because the mean of its divisors is an integer number (11299680).

Almost surely, 2^139272445 is an apocalyptic number.

It is an amenable number.

139272445 is a deficient number, since it is larger than the sum of its proper divisors (41522435).

139272445 is a wasteful number, since it uses less digits than its factorization.

139272445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9684.

The product of its digits is 60480, while the sum is 37.

The square root of 139272445 is about 11801.3747080584. The cubic root of 139272445 is about 518.3483653676.

It can be divided in two parts, 1392 and 72445, that added together give a palindrome (73837).

The spelling of 139272445 in words is "one hundred thirty-nine million, two hundred seventy-two thousand, four hundred forty-five".