404395683877 has 2 divisors, whose sum is σ = 404395683878. Its totient is φ = 404395683876.

The previous prime is 404395683871. The next prime is 404395683911. The reversal of 404395683877 is 778386593404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 404392974561 + 2709316 = 635919^2 + 1646^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404395683877 is a prime.

It is a super-2 number, since 2×404395683877² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404395683871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202197841938 + 202197841939.

It is an arithmetic number, because the mean of its divisors is an integer number (202197841939).

Almost surely, 2^404395683877 is an apocalyptic number.

It is an amenable number.

404395683877 is a deficient number, since it is larger than the sum of its proper divisors (1).

404395683877 is an equidigital number, since it uses as much as digits as its factorization.

404395683877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 121927680, while the sum is 64.

The spelling of 404395683877 in words is "four hundred four billion, three hundred ninety-five million, six hundred eighty-three thousand, eight hundred seventy-seven".