249042997 has 8 divisors (see below), whose sum is σ = 288224000. Its totient is φ = 210762864.

The previous prime is 249042991. The next prime is 249043027. The reversal of 249042997 is 799240942.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-249042997 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 (249042991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224622 + ... + 225727.

It is an arithmetic number, because the mean of its divisors is an integer number (36028000).

Almost surely, 2^249042997 is an apocalyptic number.

It is an amenable number.

249042997 is a deficient number, since it is larger than the sum of its proper divisors (39181003).

249042997 is an equidigital number, since it uses as much as digits as its factorization.

249042997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450435.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 249042997 is about 15781.0961913297. The cubic root of 249042997 is about 629.1556649178.

The spelling of 249042997 in words is "two hundred forty-nine million, forty-two thousand, nine hundred ninety-seven".