904135979 has 2 divisors, whose sum is σ = 904135980. Its totient is φ = 904135978.

The previous prime is 904135963. The next prime is 904135997. The reversal of 904135979 is 979531409.

Together with next prime (904135997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 904135979 - 2⁴ = 904135963 is a prime.

It is not a weakly prime, because it can be changed into another prime (904135909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 452067989 + 452067990.

It is an arithmetic number, because the mean of its divisors is an integer number (452067990).

Almost surely, 2^904135979 is an apocalyptic number.

904135979 is a deficient number, since it is larger than the sum of its proper divisors (1).

904135979 is an equidigital number, since it uses as much as digits as its factorization.

904135979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 306180, while the sum is 47.

The square root of 904135979 is about 30068.8539688496. The cubic root of 904135979 is about 966.9661039990.

The spelling of 904135979 in words is "nine hundred four million, one hundred thirty-five thousand, nine hundred seventy-nine".