404042719 has 2 divisors, whose sum is σ = 404042720. Its totient is φ = 404042718.

The previous prime is 404042713. The next prime is 404042767. The reversal of 404042719 is 917240404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 404042719 - 2⁷ = 404042591 is a prime.

It is a super-2 number, since 2×404042719² = 326501037553825922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404042713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202021359 + 202021360.

It is an arithmetic number, because the mean of its divisors is an integer number (202021360).

Almost surely, 2^404042719 is an apocalyptic number.

404042719 is a deficient number, since it is larger than the sum of its proper divisors (1).

404042719 is an equidigital number, since it uses as much as digits as its factorization.

404042719 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 404042719 is about 20100.8138889946. The cubic root of 404042719 is about 739.2802345231.

The spelling of 404042719 in words is "four hundred four million, forty-two thousand, seven hundred nineteen".