938974489 has 2 divisors, whose sum is σ = 938974490. Its totient is φ = 938974488.

The previous prime is 938974459. The next prime is 938974501. The reversal of 938974489 is 984479839.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 530611225 + 408363264 = 23035^2 + 20208^2 .

It is a cyclic number.

It is not a de Polignac number, because 938974489 - 2²³ = 930585881 is a prime.

It is a super-2 number, since 2×938974489² = 1763346181985622242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (938974459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 469487244 + 469487245.

It is an arithmetic number, because the mean of its divisors is an integer number (469487245).

Almost surely, 2^938974489 is an apocalyptic number.

It is an amenable number.

938974489 is a deficient number, since it is larger than the sum of its proper divisors (1).

938974489 is an equidigital number, since it uses as much as digits as its factorization.

938974489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15676416, while the sum is 61.

The square root of 938974489 is about 30642.6906292512. The cubic root of 938974489 is about 979.2297463496.

The spelling of 938974489 in words is "nine hundred thirty-eight million, nine hundred seventy-four thousand, four hundred eighty-nine".