400504453247 has 2 divisors, whose sum is σ = 400504453248. Its totient is φ = 400504453246.

The previous prime is 400504453187. The next prime is 400504453273. The reversal of 400504453247 is 742354405004.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400504453247 - 2²⁰ = 400503404671 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 400504453247.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400594453247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200252226623 + 200252226624.

It is an arithmetic number, because the mean of its divisors is an integer number (200252226624).

Almost surely, 2^400504453247 is an apocalyptic number.

400504453247 is a deficient number, since it is larger than the sum of its proper divisors (1).

400504453247 is an equidigital number, since it uses as much as digits as its factorization.

400504453247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 268800, while the sum is 38.

The spelling of 400504453247 in words is "four hundred billion, five hundred four million, four hundred fifty-three thousand, two hundred forty-seven".