390980369 has 8 divisors (see below), whose sum is σ = 432436200. Its totient is φ = 351150336.

The previous prime is 390980353. The next prime is 390980383. The reversal of 390980369 is 963089093.

It can be written as a sum of positive squares in 4 ways, for example, as 90478144 + 300502225 = 9512^2 + 17335^2 .

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 390980369 - 2⁴ = 390980353 is a prime.

It is a super-2 number, since 2×390980369² = 305731297886752322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (390980389) 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, 405944 + ... + 406905.

It is an arithmetic number, because the mean of its divisors is an integer number (54054525).

Almost surely, 2^390980369 is an apocalyptic number.

It is an amenable number.

390980369 is a deficient number, since it is larger than the sum of its proper divisors (41455831).

390980369 is a wasteful number, since it uses less digits than its factorization.

390980369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812899.

The product of its (nonzero) digits is 314928, while the sum is 47.

The square root of 390980369 is about 19773.2235358831. The cubic root of 390980369 is about 731.2260431531.

The spelling of 390980369 in words is "three hundred ninety million, nine hundred eighty thousand, three hundred sixty-nine".