3904505123 has 2 divisors, whose sum is σ = 3904505124. Its totient is φ = 3904505122.

The previous prime is 3904505057. The next prime is 3904505183. The reversal of 3904505123 is 3215054093.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3904505123 - 2⁸ = 3904504867 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3904505123.

It is not a weakly prime, because it can be changed into another prime (3904505183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1952252561 + 1952252562.

It is an arithmetic number, because the mean of its divisors is an integer number (1952252562).

Almost surely, 2^3904505123 is an apocalyptic number.

3904505123 is a deficient number, since it is larger than the sum of its proper divisors (1).

3904505123 is an equidigital number, since it uses as much as digits as its factorization.

3904505123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 3904505123 is about 62486.0394248187. The cubic root of 3904505123 is about 1574.6667806697. Note that the first 3 decimals are identical.

The spelling of 3904505123 in words is "three billion, nine hundred four million, five hundred five thousand, one hundred twenty-three".