724495389 has 8 divisors (see below), whose sum is σ = 997155072. Its totient is φ = 467416320.

The previous prime is 724495381. The next prime is 724495393. The reversal of 724495389 is 983594427.

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

It is not a de Polignac number, because 724495389 - 2³ = 724495381 is a prime.

It is a super-2 number, since 2×724495389² = 1049787137364522642, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (724495381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3895044 + ... + 3895229.

It is an arithmetic number, because the mean of its divisors is an integer number (124644384).

Almost surely, 2^724495389 is an apocalyptic number.

It is an amenable number.

724495389 is a deficient number, since it is larger than the sum of its proper divisors (272659683).

724495389 is a wasteful number, since it uses less digits than its factorization.

724495389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7790307.

The product of its digits is 2177280, while the sum is 51.

The square root of 724495389 is about 26916.4520135920. The cubic root of 724495389 is about 898.1424192481.

The spelling of 724495389 in words is "seven hundred twenty-four million, four hundred ninety-five thousand, three hundred eighty-nine".