249471724 has 24 divisors (see below), whose sum is σ = 447966288. Its totient is φ = 121497600.

The previous prime is 249471713. The next prime is 249471727. The reversal of 249471724 is 427174942.

It is a happy number.

249471724 is nontrivially palindromic in base 6.

It is a super-2 number, since 2×249471724² = 124472282151064352, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (249471727) 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, 67164 + ... + 70780.

It is an arithmetic number, because the mean of its divisors is an integer number (18665262).

Almost surely, 2^249471724 is an apocalyptic number.

It is an amenable number.

249471724 is a deficient number, since it is larger than the sum of its proper divisors (198494564).

249471724 is a wasteful number, since it uses less digits than its factorization.

249471724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4065 (or 4063 counting only the distinct ones).

The product of its digits is 112896, while the sum is 40.

The square root of 249471724 is about 15794.6739124301. The cubic root of 249471724 is about 629.5164880000.

The spelling of 249471724 in words is "two hundred forty-nine million, four hundred seventy-one thousand, seven hundred twenty-four".