920090887 has 2 divisors, whose sum is σ = 920090888. Its totient is φ = 920090886.

The previous prime is 920090879. The next prime is 920090893. The reversal of 920090887 is 788090029.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 920090887 - 2³ = 920090879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (920090387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460045443 + 460045444.

It is an arithmetic number, because the mean of its divisors is an integer number (460045444).

Almost surely, 2^920090887 is an apocalyptic number.

920090887 is a deficient number, since it is larger than the sum of its proper divisors (1).

920090887 is an equidigital number, since it uses as much as digits as its factorization.

920090887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 920090887 is about 30332.9999670326. Note that the first 4 decimals coincide. The cubic root of 920090887 is about 972.6208525848.

The spelling of 920090887 in words is "nine hundred twenty million, ninety thousand, eight hundred eighty-seven".