920090879 has 2 divisors, whose sum is σ = 920090880. Its totient is φ = 920090878.

The previous prime is 920090849. The next prime is 920090887. The reversal of 920090879 is 978090029.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 920090879 - 2¹⁶ = 920025343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (920090839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460045439 + 460045440.

It is an arithmetic number, because the mean of its divisors is an integer number (460045440).

Almost surely, 2^920090879 is an apocalyptic number.

920090879 is a deficient number, since it is larger than the sum of its proper divisors (1).

920090879 is an equidigital number, since it uses as much as digits as its factorization.

920090879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 920090879 is about 30332.9998351630. Note that the first 3 decimals coincide. The cubic root of 920090879 is about 972.6208497659.

The spelling of 920090879 in words is "nine hundred twenty million, ninety thousand, eight hundred seventy-nine".