404419957 has 2 divisors, whose sum is σ = 404419958. Its totient is φ = 404419956.

The previous prime is 404419949. The next prime is 404419969. The reversal of 404419957 is 759914404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 283551921 + 120868036 = 16839^2 + 10994^2 .

It is a cyclic number.

It is not a de Polignac number, because 404419957 - 2³ = 404419949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404419357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202209978 + 202209979.

It is an arithmetic number, because the mean of its divisors is an integer number (202209979).

Almost surely, 2^404419957 is an apocalyptic number.

It is an amenable number.

404419957 is a deficient number, since it is larger than the sum of its proper divisors (1).

404419957 is an equidigital number, since it uses as much as digits as its factorization.

404419957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 404419957 is about 20110.1953496230. The cubic root of 404419957 is about 739.5102414296.

The spelling of 404419957 in words is "four hundred four million, four hundred nineteen thousand, nine hundred fifty-seven".