390475051 has 4 divisors (see below), whose sum is σ = 390549600. Its totient is φ = 390400504.

The previous prime is 390475049. The next prime is 390475067. The reversal of 390475051 is 150574093.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 150574093 = 3373 ⋅44641.

It is a cyclic number.

It is not a de Polignac number, because 390475051 - 2¹ = 390475049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 390474998 and 390475016.

It is not an unprimeable number, because it can be changed into a prime (390475031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28771 + ... + 40108.

It is an arithmetic number, because the mean of its divisors is an integer number (97637400).

Almost surely, 2^390475051 is an apocalyptic number.

390475051 is a deficient number, since it is larger than the sum of its proper divisors (74549).

390475051 is an equidigital number, since it uses as much as digits as its factorization.

390475051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74548.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 390475051 is about 19760.4415689529. The cubic root of 390475051 is about 730.9108858277.

The spelling of 390475051 in words is "three hundred ninety million, four hundred seventy-five thousand, fifty-one".