139875775 has 24 divisors (see below), whose sum is σ = 191150960. Its totient is φ = 100880640.

The previous prime is 139875773. The next prime is 139875781. The reversal of 139875775 is 577578931.

It is not a de Polignac number, because 139875775 - 2¹ = 139875773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139875773) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8971 + ... + 18979.

Almost surely, 2^139875775 is an apocalyptic number.

139875775 is a deficient number, since it is larger than the sum of its proper divisors (51275185).

139875775 is a wasteful number, since it uses less digits than its factorization.

139875775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10075 (or 10070 counting only the distinct ones).

The product of its digits is 1852200, while the sum is 52.

The square root of 139875775 is about 11826.9089368271. The cubic root of 139875775 is about 519.0957843615.

The spelling of 139875775 in words is "one hundred thirty-nine million, eight hundred seventy-five thousand, seven hundred seventy-five".