603138989 has 2 divisors, whose sum is σ = 603138990. Its totient is φ = 603138988.

The previous prime is 603138979. The next prime is 603139001. The reversal of 603138989 is 989831306.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 593166025 + 9972964 = 24355^2 + 3158^2 .

It is a cyclic number.

It is not a de Polignac number, because 603138989 - 2²⁰ = 602090413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (603138929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 301569494 + 301569495.

It is an arithmetic number, because the mean of its divisors is an integer number (301569495).

Almost surely, 2^603138989 is an apocalyptic number.

It is an amenable number.

603138989 is a deficient number, since it is larger than the sum of its proper divisors (1).

603138989 is an equidigital number, since it uses as much as digits as its factorization.

603138989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 47.

The square root of 603138989 is about 24558.8881873753. Note that the first 3 decimals coincide. The cubic root of 603138989 is about 844.9009554442.

The spelling of 603138989 in words is "six hundred three million, one hundred thirty-eight thousand, nine hundred eighty-nine".