920604889 has 2 divisors, whose sum is σ = 920604890. Its totient is φ = 920604888.

The previous prime is 920604851. The next prime is 920604899. The reversal of 920604889 is 988406029.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 766348489 + 154256400 = 27683^2 + 12420^2 .

It is a cyclic number.

It is not a de Polignac number, because 920604889 - 2⁷ = 920604761 is a prime.

It is not a weakly prime, because it can be changed into another prime (920604809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460302444 + 460302445.

It is an arithmetic number, because the mean of its divisors is an integer number (460302445).

Almost surely, 2^920604889 is an apocalyptic number.

It is an amenable number.

920604889 is a deficient number, since it is larger than the sum of its proper divisors (1).

920604889 is an equidigital number, since it uses as much as digits as its factorization.

920604889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 920604889 is about 30341.4714376215. The cubic root of 920604889 is about 972.8019346951.

The spelling of 920604889 in words is "nine hundred twenty million, six hundred four thousand, eight hundred eighty-nine".