139023475 has 18 divisors (see below), whose sum is σ = 181798260. Its totient is φ = 105170400.

The previous prime is 139023439. The next prime is 139023527. The reversal of 139023475 is 574320931.

It is not a de Polignac number, because 139023475 - 2⁷ = 139023347 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 139023475.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 256705 + ... + 257245.

Almost surely, 2^139023475 is an apocalyptic number.

139023475 is a deficient number, since it is larger than the sum of its proper divisors (42774785).

139023475 is an frugal number, since it uses more digits than its factorization.

139023475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111 (or 565 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 139023475 is about 11790.8216422775. The cubic root of 139023475 is about 518.0393064591.

The spelling of 139023475 in words is "one hundred thirty-nine million, twenty-three thousand, four hundred seventy-five".