604136989 has 2 divisors, whose sum is σ = 604136990. Its totient is φ = 604136988.

The previous prime is 604136987. The next prime is 604137031. The reversal of 604136989 is 989631406.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 348456889 + 255680100 = 18667^2 + 15990^2 .

It is a cyclic number.

It is not a de Polignac number, because 604136989 - 2¹ = 604136987 is a prime.

It is a super-2 number, since 2×604136989² = 729963002955972242, which contains 22 as substring.

Together with 604136987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (604136987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302068494 + 302068495.

It is an arithmetic number, because the mean of its divisors is an integer number (302068495).

Almost surely, 2^604136989 is an apocalyptic number.

It is an amenable number.

604136989 is a deficient number, since it is larger than the sum of its proper divisors (1).

604136989 is an equidigital number, since it uses as much as digits as its factorization.

604136989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 604136989 is about 24579.1982985613. The cubic root of 604136989 is about 845.3667112735.

The spelling of 604136989 in words is "six hundred four million, one hundred thirty-six thousand, nine hundred eighty-nine".