390137473 has 4 divisors (see below), whose sum is σ = 425604528. Its totient is φ = 354670420.

The previous prime is 390137443. The next prime is 390137479. The reversal of 390137473 is 374731093.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-390137473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (390137479) 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, 17733511 + ... + 17733532.

It is an arithmetic number, because the mean of its divisors is an integer number (106401132).

Almost surely, 2^390137473 is an apocalyptic number.

It is an amenable number.

390137473 is a deficient number, since it is larger than the sum of its proper divisors (35467055).

390137473 is a wasteful number, since it uses less digits than its factorization.

390137473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35467054.

The product of its (nonzero) digits is 47628, while the sum is 37.

The square root of 390137473 is about 19751.8979594367. The cubic root of 390137473 is about 730.7001932596.

The spelling of 390137473 in words is "three hundred ninety million, one hundred thirty-seven thousand, four hundred seventy-three".