249963998 has 4 divisors (see below), whose sum is σ = 374946000. Its totient is φ = 124981998.

The previous prime is 249963997. The next prime is 249964007. The reversal of 249963998 is 899369942.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 899369942 = 2 ⋅449684971.

It is a super-2 number, since 2×249963998² = 124964000592288008, which contains 22 as substring.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 62490998 + ... + 62491001.

It is an arithmetic number, because the mean of its divisors is an integer number (93736500).

Almost surely, 2^249963998 is an apocalyptic number.

249963998 is a deficient number, since it is larger than the sum of its proper divisors (124982002).

249963998 is a wasteful number, since it uses less digits than its factorization.

249963998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124982001.

The product of its digits is 7558272, while the sum is 59.

The square root of 249963998 is about 15810.2497766481. The cubic root of 249963998 is about 629.9302837106.

The spelling of 249963998 in words is "two hundred forty-nine million, nine hundred sixty-three thousand, nine hundred ninety-eight".