390618073 has 8 divisors (see below), whose sum is σ = 408900096. Its totient is φ = 372691200.

The previous prime is 390618071. The next prime is 390618077. The reversal of 390618073 is 370816093.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 390618073 - 2¹ = 390618071 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (390618071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86536 + ... + 90937.

It is an arithmetic number, because the mean of its divisors is an integer number (51112512).

Almost surely, 2^390618073 is an apocalyptic number.

It is an amenable number.

390618073 is a deficient number, since it is larger than the sum of its proper divisors (18282023).

390618073 is a wasteful number, since it uses less digits than its factorization.

390618073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177575.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 390618073 is about 19764.0601344967. The cubic root of 390618073 is about 731.0001135312. Note that the first 3 decimals are identical.

The spelling of 390618073 in words is "three hundred ninety million, six hundred eighteen thousand, seventy-three".