609459973 has 2 divisors, whose sum is σ = 609459974. Its totient is φ = 609459972.

The previous prime is 609459971. The next prime is 609459989. The reversal of 609459973 is 379954906.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 412983684 + 196476289 = 20322^2 + 14017^2 .

It is a cyclic number.

It is not a de Polignac number, because 609459973 - 2¹ = 609459971 is a prime.

Together with 609459971, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 609459973.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (609459971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304729986 + 304729987.

It is an arithmetic number, because the mean of its divisors is an integer number (304729987).

Almost surely, 2^609459973 is an apocalyptic number.

It is an amenable number.

609459973 is a deficient number, since it is larger than the sum of its proper divisors (1).

609459973 is an equidigital number, since it uses as much as digits as its factorization.

609459973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1837080, while the sum is 52.

The square root of 609459973 is about 24687.2431227142. The cubic root of 609459973 is about 847.8422656106.

The spelling of 609459973 in words is "six hundred nine million, four hundred fifty-nine thousand, nine hundred seventy-three".