400897201 has 2 divisors, whose sum is σ = 400897202. Its totient is φ = 400897200.

The previous prime is 400897193. The next prime is 400897243. The reversal of 400897201 is 102798004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 217267600 + 183629601 = 14740^2 + 13551^2 .

It is a cyclic number.

It is not a de Polignac number, because 400897201 - 2³ = 400897193 is a prime.

It is not a weakly prime, because it can be changed into another prime (400897001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200448600 + 200448601.

It is an arithmetic number, because the mean of its divisors is an integer number (200448601).

Almost surely, 2^400897201 is an apocalyptic number.

It is an amenable number.

400897201 is a deficient number, since it is larger than the sum of its proper divisors (1).

400897201 is an equidigital number, since it uses as much as digits as its factorization.

400897201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 400897201 is about 20022.4174614356. The cubic root of 400897201 is about 737.3567744850.

The spelling of 400897201 in words is "four hundred million, eight hundred ninety-seven thousand, two hundred one".