400455359 has 2 divisors, whose sum is σ = 400455360. Its totient is φ = 400455358.

The previous prime is 400455337. The next prime is 400455371. The reversal of 400455359 is 953554004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400455359 - 2⁸ = 400455103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400455659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200227679 + 200227680.

It is an arithmetic number, because the mean of its divisors is an integer number (200227680).

Almost surely, 2^400455359 is an apocalyptic number.

400455359 is a deficient number, since it is larger than the sum of its proper divisors (1).

400455359 is an equidigital number, since it uses as much as digits as its factorization.

400455359 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54000, while the sum is 35.

The square root of 400455359 is about 20011.3807369707. The cubic root of 400455359 is about 737.0857865157.

The spelling of 400455359 in words is "four hundred million, four hundred fifty-five thousand, three hundred fifty-nine".