39147975 has 48 divisors (see below), whose sum is σ = 73209600. Its totient is φ = 20504160.

The previous prime is 39147967. The next prime is 39148007. The reversal of 39147975 is 57974193.

It is not a de Polignac number, because 39147975 - 2³ = 39147967 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 39147975.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 39334 + ... + 40316.

It is an arithmetic number, because the mean of its divisors is an integer number (1525200).

Almost surely, 2^39147975 is an apocalyptic number.

39147975 is a deficient number, since it is larger than the sum of its proper divisors (34061625).

39147975 is a wasteful number, since it uses less digits than its factorization.

39147975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061 (or 1050 counting only the distinct ones).

The product of its digits is 238140, while the sum is 45.

The square root of 39147975 is about 6256.8342634275. The cubic root of 39147975 is about 339.5495042852.

The spelling of 39147975 in words is "thirty-nine million, one hundred forty-seven thousand, nine hundred seventy-five".