249963995 has 16 divisors (see below), whose sum is σ = 302678112. Its totient is φ = 198167040.

The previous prime is 249963983. The next prime is 249963997. The reversal of 249963995 is 599369942.

It is not a de Polignac number, because 249963995 - 2¹⁰ = 249962971 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 249963995.

It is not an unprimeable number, because it can be changed into a prime (249963997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 340649 + ... + 341381.

It is an arithmetic number, because the mean of its divisors is an integer number (18917382).

Almost surely, 2^249963995 is an apocalyptic number.

249963995 is a deficient number, since it is larger than the sum of its proper divisors (52714117).

249963995 is a wasteful number, since it uses less digits than its factorization.

249963995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1262.

The product of its digits is 4723920, while the sum is 56.

The square root of 249963995 is about 15810.2496817729. The cubic root of 249963995 is about 629.9302811906.

The spelling of 249963995 in words is "two hundred forty-nine million, nine hundred sixty-three thousand, nine hundred ninety-five".