249384929 has 4 divisors (see below), whose sum is σ = 260227776. Its totient is φ = 238542084.

The previous prime is 249384913. The next prime is 249384931. The reversal of 249384929 is 929483942.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 249384929 - 2⁴ = 249384913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (249384529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5421389 + ... + 5421434.

It is an arithmetic number, because the mean of its divisors is an integer number (65056944).

Almost surely, 2^249384929 is an apocalyptic number.

It is an amenable number.

249384929 is a deficient number, since it is larger than the sum of its proper divisors (10842847).

249384929 is a wasteful number, since it uses less digits than its factorization.

249384929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10842846.

The product of its digits is 1119744, while the sum is 50.

The square root of 249384929 is about 15791.9260699891. The cubic root of 249384929 is about 629.4434734174.

The spelling of 249384929 in words is "two hundred forty-nine million, three hundred eighty-four thousand, nine hundred twenty-nine".