412399681 has 2 divisors, whose sum is σ = 412399682. Its totient is φ = 412399680.

The previous prime is 412399661. The next prime is 412399699. The reversal of 412399681 is 186993214.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 411887025 + 512656 = 20295^2 + 716^2 .

It is a cyclic number.

It is not a de Polignac number, because 412399681 - 2²⁵ = 378845249 is a prime.

It is a super-2 number, since 2×412399681² = 340146993777803522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (412399601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 206199840 + 206199841.

It is an arithmetic number, because the mean of its divisors is an integer number (206199841).

Almost surely, 2^412399681 is an apocalyptic number.

It is an amenable number.

412399681 is a deficient number, since it is larger than the sum of its proper divisors (1).

412399681 is an equidigital number, since it uses as much as digits as its factorization.

412399681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 43.

The square root of 412399681 is about 20307.6261783597. The cubic root of 412399681 is about 744.3424259341.

The spelling of 412399681 in words is "four hundred twelve million, three hundred ninety-nine thousand, six hundred eighty-one".