609890933 has 2 divisors, whose sum is σ = 609890934. Its totient is φ = 609890932.

The previous prime is 609890893. The next prime is 609890971. The reversal of 609890933 is 339098906.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 448677124 + 161213809 = 21182^2 + 12697^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-609890933 is a prime.

It is a super-2 number, since 2×609890933² = 743933900311220978, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (609896933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304945466 + 304945467.

It is an arithmetic number, because the mean of its divisors is an integer number (304945467).

Almost surely, 2^609890933 is an apocalyptic number.

It is an amenable number.

609890933 is a deficient number, since it is larger than the sum of its proper divisors (1).

609890933 is an equidigital number, since it uses as much as digits as its factorization.

609890933 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 314928, while the sum is 47.

The square root of 609890933 is about 24695.9699748765. The cubic root of 609890933 is about 848.0420599800.

The spelling of 609890933 in words is "six hundred nine million, eight hundred ninety thousand, nine hundred thirty-three".