400080481 has 2 divisors, whose sum is σ = 400080482. Its totient is φ = 400080480.

The previous prime is 400080449. The next prime is 400080487. The reversal of 400080481 is 184080004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 231496225 + 168584256 = 15215^2 + 12984^2 .

It is a cyclic number.

It is not a de Polignac number, because 400080481 - 2⁵ = 400080449 is a prime.

It is a super-2 number, since 2×400080481² = 320128782554382722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (400080487) 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, 200040240 + 200040241.

It is an arithmetic number, because the mean of its divisors is an integer number (200040241).

Almost surely, 2^400080481 is an apocalyptic number.

It is an amenable number.

400080481 is a deficient number, since it is larger than the sum of its proper divisors (1).

400080481 is an equidigital number, since it uses as much as digits as its factorization.

400080481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 400080481 is about 20002.0119238041. The cubic root of 400080481 is about 736.8557121708.

The spelling of 400080481 in words is "four hundred million, eighty thousand, four hundred eighty-one".