724470989 has 8 divisors (see below), whose sum is σ = 811692768. Its totient is φ = 640809360.

The previous prime is 724470979. The next prime is 724471037. The reversal of 724470989 is 989074427.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-724470989 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (724470979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 889607 + ... + 890420.

It is an arithmetic number, because the mean of its divisors is an integer number (101461596).

Almost surely, 2^724470989 is an apocalyptic number.

It is an amenable number.

724470989 is a deficient number, since it is larger than the sum of its proper divisors (87221779).

724470989 is a wasteful number, since it uses less digits than its factorization.

724470989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1780075.

The product of its (nonzero) digits is 1016064, while the sum is 50.

The square root of 724470989 is about 26915.9987553871. The cubic root of 724470989 is about 898.1323364045.

The spelling of 724470989 in words is "seven hundred twenty-four million, four hundred seventy thousand, nine hundred eighty-nine".