404027969 has 2 divisors, whose sum is σ = 404027970. Its totient is φ = 404027968.

The previous prime is 404027963. The next prime is 404028013. The reversal of 404027969 is 969720404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 284934400 + 119093569 = 16880^2 + 10913^2 .

It is a cyclic number.

It is not a de Polignac number, because 404027969 - 2⁸ = 404027713 is a prime.

It is a super-2 number, since 2×404027969² = 326477199468529922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (404027963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202013984 + 202013985.

It is an arithmetic number, because the mean of its divisors is an integer number (202013985).

Almost surely, 2^404027969 is an apocalyptic number.

It is an amenable number.

404027969 is a deficient number, since it is larger than the sum of its proper divisors (1).

404027969 is an equidigital number, since it uses as much as digits as its factorization.

404027969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 404027969 is about 20100.4469850797. The cubic root of 404027969 is about 739.2712383488.

The spelling of 404027969 in words is "four hundred four million, twenty-seven thousand, nine hundred sixty-nine".