456400669 has 2 divisors, whose sum is σ = 456400670. Its totient is φ = 456400668.

The previous prime is 456400621. The next prime is 456400673. The reversal of 456400669 is 966004654.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 447322500 + 9078169 = 21150^2 + 3013^2 .

It is a cyclic number.

It is not a de Polignac number, because 456400669 - 2⁷ = 456400541 is a prime.

It is a super-2 number, since 2×456400669² = 416603141327295122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (456400169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 228200334 + 228200335.

It is an arithmetic number, because the mean of its divisors is an integer number (228200335).

Almost surely, 2^456400669 is an apocalyptic number.

It is an amenable number.

456400669 is a deficient number, since it is larger than the sum of its proper divisors (1).

456400669 is an equidigital number, since it uses as much as digits as its factorization.

456400669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 40.

The square root of 456400669 is about 21363.5359666887. The cubic root of 456400669 is about 769.9255952168.

The spelling of 456400669 in words is "four hundred fifty-six million, four hundred thousand, six hundred sixty-nine".