604077989 has 2 divisors, whose sum is σ = 604077990. Its totient is φ = 604077988.

The previous prime is 604077961. The next prime is 604078037. The reversal of 604077989 is 989770406.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 307721764 + 296356225 = 17542^2 + 17215^2 .

It is a cyclic number.

It is not a de Polignac number, because 604077989 - 2²⁸ = 335642533 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (604077919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302038994 + 302038995.

It is an arithmetic number, because the mean of its divisors is an integer number (302038995).

Almost surely, 2^604077989 is an apocalyptic number.

It is an amenable number.

604077989 is a deficient number, since it is larger than the sum of its proper divisors (1).

604077989 is an equidigital number, since it uses as much as digits as its factorization.

604077989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 762048, while the sum is 50.

The square root of 604077989 is about 24577.9980673773. The cubic root of 604077989 is about 845.3391908818.

The spelling of 604077989 in words is "six hundred four million, seventy-seven thousand, nine hundred eighty-nine".