404152499 has 2 divisors, whose sum is σ = 404152500. Its totient is φ = 404152498.

The previous prime is 404152453. The next prime is 404152501. The reversal of 404152499 is 994251404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 404152499 - 2²⁴ = 387375283 is a prime.

Together with 404152501, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_21545867 and since 404152499 and 21545867 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (404152699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202076249 + 202076250.

It is an arithmetic number, because the mean of its divisors is an integer number (202076250).

Almost surely, 2^404152499 is an apocalyptic number.

404152499 is a deficient number, since it is larger than the sum of its proper divisors (1).

404152499 is an equidigital number, since it uses as much as digits as its factorization.

404152499 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 404152499 is about 20103.5444387302. The cubic root of 404152499 is about 739.3471835783.

The spelling of 404152499 in words is "four hundred four million, one hundred fifty-two thousand, four hundred ninety-nine".