404321087 has 2 divisors, whose sum is σ = 404321088. Its totient is φ = 404321086.

The previous prime is 404321053. The next prime is 404321101. The reversal of 404321087 is 780123404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 404321087 - 2⁸ = 404320831 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404321987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202160543 + 202160544.

It is an arithmetic number, because the mean of its divisors is an integer number (202160544).

Almost surely, 2^404321087 is an apocalyptic number.

404321087 is a deficient number, since it is larger than the sum of its proper divisors (1).

404321087 is an equidigital number, since it uses as much as digits as its factorization.

404321087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 404321087 is about 20107.7369935058. The cubic root of 404321087 is about 739.4499729427.

The spelling of 404321087 in words is "four hundred four million, three hundred twenty-one thousand, eighty-seven".