406332481 has 2 divisors, whose sum is σ = 406332482. Its totient is φ = 406332480.

The previous prime is 406332457. The next prime is 406332533. The reversal of 406332481 is 184233604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 252969025 + 153363456 = 15905^2 + 12384^2 .

It is a cyclic number.

It is not a de Polignac number, because 406332481 - 2⁵ = 406332449 is a prime.

It is a super-2 number, since 2×406332481² = 330212170231230722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (406332401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203166240 + 203166241.

It is an arithmetic number, because the mean of its divisors is an integer number (203166241).

Almost surely, 2^406332481 is an apocalyptic number.

It is an amenable number.

406332481 is a deficient number, since it is larger than the sum of its proper divisors (1).

406332481 is an equidigital number, since it uses as much as digits as its factorization.

406332481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 406332481 is about 20157.6903686906. The cubic root of 406332481 is about 740.6741367128.

The spelling of 406332481 in words is "four hundred six million, three hundred thirty-two thousand, four hundred eighty-one".