139440475 has 6 divisors (see below), whose sum is σ = 172906220. Its totient is φ = 111552360.

The previous prime is 139440437. The next prime is 139440479. The reversal of 139440475 is 574044931.

It is not a de Polignac number, because 139440475 - 2⁷ = 139440347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139440479) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2788785 + ... + 2788834.

Almost surely, 2^139440475 is an apocalyptic number.

139440475 is a deficient number, since it is larger than the sum of its proper divisors (33465745).

139440475 is an equidigital number, since it uses as much as digits as its factorization.

139440475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5577629 (or 5577624 counting only the distinct ones).

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

The square root of 139440475 is about 11808.4916479625. The cubic root of 139440475 is about 518.5567412882.

The spelling of 139440475 in words is "one hundred thirty-nine million, four hundred forty thousand, four hundred seventy-five".