390642273 has 24 divisors (see below), whose sum is σ = 646371648. Its totient is φ = 222704352.

The previous prime is 390642251. The next prime is 390642289. The reversal of 390642273 is 372246093.

It is a happy number.

390642273 is a `hidden beast` number, since 3 + 9 + 0 + 642 + 2 + 7 + 3 = 666.

It is not a de Polignac number, because 390642273 - 2¹³ = 390634081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (390642233) 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, 20911 + ... + 34907.

It is an arithmetic number, because the mean of its divisors is an integer number (26932152).

Almost surely, 2^390642273 is an apocalyptic number.

It is an amenable number.

390642273 is a deficient number, since it is larger than the sum of its proper divisors (255729375).

390642273 is a wasteful number, since it uses less digits than its factorization.

390642273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14453 (or 14450 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The square root of 390642273 is about 19764.6723473980. The cubic root of 390642273 is about 731.0152091269.

The spelling of 390642273 in words is "three hundred ninety million, six hundred forty-two thousand, two hundred seventy-three".