724979422 has 4 divisors (see below), whose sum is σ = 1087469136. Its totient is φ = 362489710.

The previous prime is 724979393. The next prime is 724979429. The reversal of 724979422 is 224979427.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (724979429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 181244854 + ... + 181244857.

It is an arithmetic number, because the mean of its divisors is an integer number (271867284).

Almost surely, 2^724979422 is an apocalyptic number.

724979422 is a deficient number, since it is larger than the sum of its proper divisors (362489714).

724979422 is a wasteful number, since it uses less digits than its factorization.

724979422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362489713.

The product of its digits is 508032, while the sum is 46.

The square root of 724979422 is about 26925.4419090941. The cubic root of 724979422 is about 898.3423900591.

The spelling of 724979422 in words is "seven hundred twenty-four million, nine hundred seventy-nine thousand, four hundred twenty-two".