404542907 has 2 divisors, whose sum is σ = 404542908. Its totient is φ = 404542906.

The previous prime is 404542823. The next prime is 404542933. The reversal of 404542907 is 709245404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 404542907 - 2¹² = 404538811 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (404542937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202271453 + 202271454.

It is an arithmetic number, because the mean of its divisors is an integer number (202271454).

Almost surely, 2^404542907 is an apocalyptic number.

404542907 is a deficient number, since it is larger than the sum of its proper divisors (1).

404542907 is an equidigital number, since it uses as much as digits as its factorization.

404542907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 404542907 is about 20113.2520244738. The cubic root of 404542907 is about 739.5851747345.

The spelling of 404542907 in words is "four hundred four million, five hundred forty-two thousand, nine hundred seven".