390003875 has 16 divisors (see below), whose sum is σ = 487946784. Its totient is φ = 311220000.

The previous prime is 390003871. The next prime is 390003877. The reversal of 390003875 is 578300093.

It is not a de Polignac number, because 390003875 - 2² = 390003871 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (390003871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48920 + ... + 56330.

It is an arithmetic number, because the mean of its divisors is an integer number (30496674).

Almost surely, 2^390003875 is an apocalyptic number.

390003875 is a deficient number, since it is larger than the sum of its proper divisors (97942909).

390003875 is an equidigital number, since it uses as much as digits as its factorization.

390003875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7847 (or 7837 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 390003875 is about 19748.5157670140. The cubic root of 390003875 is about 730.6167771680.

It can be divided in two parts, 39000 and 3875, that added together give a cube (42875 = 35³).

The spelling of 390003875 in words is "three hundred ninety million, three thousand, eight hundred seventy-five".