400504453291 has 2 divisors, whose sum is σ = 400504453292. Its totient is φ = 400504453290.

The previous prime is 400504453273. The next prime is 400504453319. The reversal of 400504453291 is 192354405004.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 400504453291 - 2⁷ = 400504453163 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 400504453291.

It is not a weakly prime, because it can be changed into another prime (400504456291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200252226645 + 200252226646.

It is an arithmetic number, because the mean of its divisors is an integer number (200252226646).

Almost surely, 2^400504453291 is an apocalyptic number.

400504453291 is a deficient number, since it is larger than the sum of its proper divisors (1).

400504453291 is an equidigital number, since it uses as much as digits as its factorization.

400504453291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 37.

Adding to 400504453291 its reverse (192354405004), we get a palindrome (592858858295).

The spelling of 400504453291 in words is "four hundred billion, five hundred four million, four hundred fifty-three thousand, two hundred ninety-one".