390641267 has 2 divisors, whose sum is σ = 390641268. Its totient is φ = 390641266.

The previous prime is 390641257. The next prime is 390641287. The reversal of 390641267 is 762146093.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-390641267 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 390641267.

It is not a weakly prime, because it can be changed into another prime (390641257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195320633 + 195320634.

It is an arithmetic number, because the mean of its divisors is an integer number (195320634).

Almost surely, 2^390641267 is an apocalyptic number.

390641267 is a deficient number, since it is larger than the sum of its proper divisors (1).

390641267 is an equidigital number, since it uses as much as digits as its factorization.

390641267 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 390641267 is about 19764.6468979337. The cubic root of 390641267 is about 731.0145816116.

The spelling of 390641267 in words is "three hundred ninety million, six hundred forty-one thousand, two hundred sixty-seven".