3904505057 has 2 divisors, whose sum is σ = 3904505058. Its totient is φ = 3904505056.

The previous prime is 3904505021. The next prime is 3904505123. The reversal of 3904505057 is 7505054093.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2512916641 + 1391588416 = 50129^2 + 37304^2 .

It is a cyclic number.

It is not a de Polignac number, because 3904505057 - 2²² = 3900310753 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3904505057.

It is not a weakly prime, because it can be changed into another prime (3904504057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1952252528 + 1952252529.

It is an arithmetic number, because the mean of its divisors is an integer number (1952252529).

Almost surely, 2^3904505057 is an apocalyptic number.

It is an amenable number.

3904505057 is a deficient number, since it is larger than the sum of its proper divisors (1).

3904505057 is an equidigital number, since it uses as much as digits as its factorization.

3904505057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 94500, while the sum is 38.

The square root of 3904505057 is about 62486.0388967008. The cubic root of 3904505057 is about 1574.6667717972. Note that the first 3 decimals are identical.

The spelling of 3904505057 in words is "three billion, nine hundred four million, five hundred five thousand, fifty-seven".