249937479 has 36 divisors (see below), whose sum is σ = 407615208. Its totient is φ = 147359520.

The previous prime is 249937463. The next prime is 249937483. The reversal of 249937479 is 974739942.

It is a happy number.

It is not a de Polignac number, because 249937479 - 2⁴ = 249937463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249937439) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 37192 + ... + 43394.

Almost surely, 2^249937479 is an apocalyptic number.

249937479 is a deficient number, since it is larger than the sum of its proper divisors (157677729).

249937479 is a wasteful number, since it uses less digits than its factorization.

249937479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6268 (or 6254 counting only the distinct ones).

The product of its digits is 3429216, while the sum is 54.

The square root of 249937479 is about 15809.4110896010. The cubic root of 249937479 is about 629.9080062199.

The spelling of 249937479 in words is "two hundred forty-nine million, nine hundred thirty-seven thousand, four hundred seventy-nine".