400755659 has 2 divisors, whose sum is σ = 400755660. Its totient is φ = 400755658.

The previous prime is 400755647. The next prime is 400755763. The reversal of 400755659 is 956557004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 400755659 - 2⁴ = 400755643 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (400752659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200377829 + 200377830.

It is an arithmetic number, because the mean of its divisors is an integer number (200377830).

Almost surely, 2^400755659 is an apocalyptic number.

400755659 is a deficient number, since it is larger than the sum of its proper divisors (1).

400755659 is an equidigital number, since it uses as much as digits as its factorization.

400755659 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 189000, while the sum is 41.

The square root of 400755659 is about 20018.8825612220. The cubic root of 400755659 is about 737.2699864527.

The spelling of 400755659 in words is "four hundred million, seven hundred fifty-five thousand, six hundred fifty-nine".