249994997 has 16 divisors (see below), whose sum is σ = 291818112. Its totient is φ = 209744640.

The previous prime is 249994967. The next prime is 249995003. The reversal of 249994997 is 799499942.

It is a happy number.

It is not a de Polignac number, because 249994997 - 2¹⁸ = 249732853 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 (249994967) 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 15 ways as a sum of consecutive naturals, for example, 68222 + ... + 71792.

It is an arithmetic number, because the mean of its divisors is an integer number (18238632).

Almost surely, 2^249994997 is an apocalyptic number.

It is an amenable number.

249994997 is a deficient number, since it is larger than the sum of its proper divisors (41823115).

249994997 is a wasteful number, since it uses less digits than its factorization.

249994997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3788.

The product of its digits is 13226976, while the sum is 62.

The square root of 249994997 is about 15811.2300912990. The cubic root of 249994997 is about 629.9563226627.

The spelling of 249994997 in words is "two hundred forty-nine million, nine hundred ninety-four thousand, nine hundred ninety-seven".