400451041 has 2 divisors, whose sum is σ = 400451042. Its totient is φ = 400451040.

The previous prime is 400451033. The next prime is 400451047. The reversal of 400451041 is 140154004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 394221025 + 6230016 = 19855^2 + 2496^2 .

It is a cyclic number.

It is not a de Polignac number, because 400451041 - 2³ = 400451033 is a prime.

It is a super-2 number, since 2×400451041² = 320722072475967362, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (400451047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200225520 + 200225521.

It is an arithmetic number, because the mean of its divisors is an integer number (200225521).

Almost surely, 2^400451041 is an apocalyptic number.

It is an amenable number.

400451041 is a deficient number, since it is larger than the sum of its proper divisors (1).

400451041 is an equidigital number, since it uses as much as digits as its factorization.

400451041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 400451041 is about 20011.2728480724. The cubic root of 400451041 is about 737.0831372418.

The spelling of 400451041 in words is "four hundred million, four hundred fifty-one thousand, forty-one".