400917201 has 4 divisors (see below), whose sum is σ = 534556272. Its totient is φ = 267278132.

The previous prime is 400917169. The next prime is 400917227. The reversal of 400917201 is 102719004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 400917201 - 2⁵ = 400917169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400915201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66819531 + ... + 66819536.

It is an arithmetic number, because the mean of its divisors is an integer number (133639068).

Almost surely, 2^400917201 is an apocalyptic number.

It is an amenable number.

400917201 is a deficient number, since it is larger than the sum of its proper divisors (133639071).

400917201 is a wasteful number, since it uses less digits than its factorization.

400917201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133639070.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 400917201 is about 20022.9168953976. The cubic root of 400917201 is about 737.3690360575.

The spelling of 400917201 in words is "four hundred million, nine hundred seventeen thousand, two hundred one".