404007432889 has 2 divisors, whose sum is σ = 404007432890. Its totient is φ = 404007432888.

The previous prime is 404007432847. The next prime is 404007432911. The reversal of 404007432889 is 988234700404.

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., 350828766864 + 53178666025 = 592308^2 + 230605^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404007432889 is a prime.

It is not a weakly prime, because it can be changed into another prime (404007432289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202003716444 + 202003716445.

It is an arithmetic number, because the mean of its divisors is an integer number (202003716445).

Almost surely, 2^404007432889 is an apocalyptic number.

It is an amenable number.

404007432889 is a deficient number, since it is larger than the sum of its proper divisors (1).

404007432889 is an equidigital number, since it uses as much as digits as its factorization.

404007432889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1548288, while the sum is 49.

The spelling of 404007432889 in words is "four hundred four billion, seven million, four hundred thirty-two thousand, eight hundred eighty-nine".