400453297 has 2 divisors, whose sum is σ = 400453298. Its totient is φ = 400453296.

The previous prime is 400453289. The next prime is 400453321. The reversal of 400453297 is 792354004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 229340736 + 171112561 = 15144^2 + 13081^2 .

It is a cyclic number.

It is not a de Polignac number, because 400453297 - 2³ = 400453289 is a prime.

It is not a weakly prime, because it can be changed into another prime (400453397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200226648 + 200226649.

It is an arithmetic number, because the mean of its divisors is an integer number (200226649).

Almost surely, 2^400453297 is an apocalyptic number.

It is an amenable number.

400453297 is a deficient number, since it is larger than the sum of its proper divisors (1).

400453297 is an equidigital number, since it uses as much as digits as its factorization.

400453297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 400453297 is about 20011.3292162215. The cubic root of 400453297 is about 737.0845213947.

The spelling of 400453297 in words is "four hundred million, four hundred fifty-three thousand, two hundred ninety-seven".