4009904957 has 2 divisors, whose sum is σ = 4009904958. Its totient is φ = 4009904956.

The previous prime is 4009904953. The next prime is 4009905017. The reversal of 4009904957 is 7594099004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3089025241 + 920879716 = 55579^2 + 30346^2 .

It is a cyclic number.

It is not a de Polignac number, because 4009904957 - 2² = 4009904953 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4009904953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2004952478 + 2004952479.

It is an arithmetic number, because the mean of its divisors is an integer number (2004952479).

Almost surely, 2^4009904957 is an apocalyptic number.

It is an amenable number.

4009904957 is a deficient number, since it is larger than the sum of its proper divisors (1).

4009904957 is an equidigital number, since it uses as much as digits as its factorization.

4009904957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 4009904957 is about 63323.8103480831. The cubic root of 4009904957 is about 1588.7102335433.

The spelling of 4009904957 in words is "four billion, nine million, nine hundred four thousand, nine hundred fifty-seven".