396469391 has 2 divisors, whose sum is σ = 396469392. Its totient is φ = 396469390.

The previous prime is 396469387. The next prime is 396469399. The reversal of 396469391 is 193964693.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 396469391 - 2² = 396469387 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (396469399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198234695 + 198234696.

It is an arithmetic number, because the mean of its divisors is an integer number (198234696).

Almost surely, 2^396469391 is an apocalyptic number.

396469391 is a deficient number, since it is larger than the sum of its proper divisors (1).

396469391 is an equidigital number, since it uses as much as digits as its factorization.

396469391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 944784, while the sum is 50.

The square root of 396469391 is about 19911.5391419147. The cubic root of 396469391 is about 734.6320777244.

It can be divided in two parts, 3964693 and 91, that multiplied together give a palindrome (360787063).

The spelling of 396469391 in words is "three hundred ninety-six million, four hundred sixty-nine thousand, three hundred ninety-one".