249422749 has 8 divisors (see below), whose sum is σ = 255011328. Its totient is φ = 243846000.

The previous prime is 249422743. The next prime is 249422779. The reversal of 249422749 is 947224942.

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

It is a cyclic number.

It is not a de Polignac number, because 249422749 - 2⁹ = 249422237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249422743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50124 + ... + 54874.

It is an arithmetic number, because the mean of its divisors is an integer number (31876416).

Almost surely, 2^249422749 is an apocalyptic number.

It is an amenable number.

249422749 is a deficient number, since it is larger than the sum of its proper divisors (5588579).

249422749 is a wasteful number, since it uses less digits than its factorization.

249422749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5915.

The product of its digits is 290304, while the sum is 43.

The square root of 249422749 is about 15793.1234719418. The cubic root of 249422749 is about 629.4752908291.

The spelling of 249422749 in words is "two hundred forty-nine million, four hundred twenty-two thousand, seven hundred forty-nine".