390312897 has 8 divisors (see below), whose sum is σ = 560449344. Its totient is φ = 240192528.

The previous prime is 390312821. The next prime is 390312931. The reversal of 390312897 is 798213093.

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

It is not a de Polignac number, because 390312897 - 2¹⁴ = 390296513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (390312817) 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, 5003973 + ... + 5004050.

It is an arithmetic number, because the mean of its divisors is an integer number (70056168).

Almost surely, 2^390312897 is an apocalyptic number.

It is an amenable number.

390312897 is a deficient number, since it is larger than the sum of its proper divisors (170136447).

390312897 is a wasteful number, since it uses less digits than its factorization.

390312897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10008039.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 390312897 is about 19756.3381475414. The cubic root of 390312897 is about 730.8096958086.

The spelling of 390312897 in words is "three hundred ninety million, three hundred twelve thousand, eight hundred ninety-seven".