249749495 has 8 divisors (see below), whose sum is σ = 299823984. Its totient is φ = 199716544.

The previous prime is 249749473. The next prime is 249749531. The reversal of 249749495 is 594947942.

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 249749495 - 2⁸ = 249749239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4892 + ... + 22878.

It is an arithmetic number, because the mean of its divisors is an integer number (37477998).

Almost surely, 2^249749495 is an apocalyptic number.

249749495 is a deficient number, since it is larger than the sum of its proper divisors (50074489).

249749495 is a wasteful number, since it uses less digits than its factorization.

249749495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20769.

The product of its digits is 3265920, while the sum is 53.

The square root of 249749495 is about 15803.4646517781. The cubic root of 249749495 is about 629.7500436145.

The spelling of 249749495 in words is "two hundred forty-nine million, seven hundred forty-nine thousand, four hundred ninety-five".