72983489 has 2 divisors, whose sum is σ = 72983490. Its totient is φ = 72983488.

The previous prime is 72983473. The next prime is 72983497. The reversal of 72983489 is 98438927.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54878464 + 18105025 = 7408^2 + 4255^2 .

It is a cyclic number.

It is not a de Polignac number, because 72983489 - 2⁴ = 72983473 is a prime.

It is a super-2 number, since 2×72983489² = 10653179333226242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (72983419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36491744 + 36491745.

It is an arithmetic number, because the mean of its divisors is an integer number (36491745).

Almost surely, 2^72983489 is an apocalyptic number.

It is an amenable number.

72983489 is a deficient number, since it is larger than the sum of its proper divisors (1).

72983489 is an equidigital number, since it uses as much as digits as its factorization.

72983489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 50.

The square root of 72983489 is about 8543.0374574855. The cubic root of 72983489 is about 417.9024080981.

The spelling of 72983489 in words is "seventy-two million, nine hundred eighty-three thousand, four hundred eighty-nine".