390390697 has 2 divisors, whose sum is σ = 390390698. Its totient is φ = 390390696.

The previous prime is 390390691. The next prime is 390390769. The reversal of 390390697 is 796093093.

Together with next prime (390390769) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 354041856 + 36348841 = 18816^2 + 6029^2 .

It is a cyclic number.

It is not a de Polignac number, because 390390697 - 2¹⁹ = 389866409 is a prime.

It is not a weakly prime, because it can be changed into another prime (390390691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195195348 + 195195349.

It is an arithmetic number, because the mean of its divisors is an integer number (195195349).

Almost surely, 2^390390697 is an apocalyptic number.

It is an amenable number.

390390697 is a deficient number, since it is larger than the sum of its proper divisors (1).

390390697 is an equidigital number, since it uses as much as digits as its factorization.

390390697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 275562, while the sum is 46.

The square root of 390390697 is about 19758.3070378006. The cubic root of 390390697 is about 730.8582493473.

The spelling of 390390697 in words is "three hundred ninety million, three hundred ninety thousand, six hundred ninety-seven".