396288691 has 2 divisors, whose sum is σ = 396288692. Its totient is φ = 396288690.

The previous prime is 396288679. The next prime is 396288707. The reversal of 396288691 is 196882693.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 396288691 - 2²⁵ = 362734259 is a prime.

It is a super-2 number, since 2×396288691² = 314089453228986962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (396288601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198144345 + 198144346.

It is an arithmetic number, because the mean of its divisors is an integer number (198144346).

Almost surely, 2^396288691 is an apocalyptic number.

396288691 is a deficient number, since it is larger than the sum of its proper divisors (1).

396288691 is an equidigital number, since it uses as much as digits as its factorization.

396288691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1119744, while the sum is 52.

The square root of 396288691 is about 19907.0010549053. The cubic root of 396288691 is about 734.5204523024.

The spelling of 396288691 in words is "three hundred ninety-six million, two hundred eighty-eight thousand, six hundred ninety-one".