731074489 has 2 divisors, whose sum is σ = 731074490. Its totient is φ = 731074488.

The previous prime is 731074469. The next prime is 731074493. The reversal of 731074489 is 984470137.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 396806400 + 334268089 = 19920^2 + 18283^2 .

It is a cyclic number.

It is not a de Polignac number, because 731074489 - 2⁷ = 731074361 is a prime.

It is a super-2 number, since 2×731074489² = 1068939816933222242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (731074429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 365537244 + 365537245.

It is an arithmetic number, because the mean of its divisors is an integer number (365537245).

Almost surely, 2^731074489 is an apocalyptic number.

It is an amenable number.

731074489 is a deficient number, since it is larger than the sum of its proper divisors (1).

731074489 is an equidigital number, since it uses as much as digits as its factorization.

731074489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 731074489 is about 27038.3891716944. The cubic root of 731074489 is about 900.8528906744.

The spelling of 731074489 in words is "seven hundred thirty-one million, seventy-four thousand, four hundred eighty-nine".