249963969 has 8 divisors (see below), whose sum is σ = 334489600. Its totient is φ = 166040496.

The previous prime is 249963947. The next prime is 249963983. The reversal of 249963969 is 969369942.

249963969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 249963969 - 2⁹ = 249963457 is a prime.

It is a super-2 number, since 2×249963969² = 124963971596465922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (249963569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149569 + ... + 151230.

It is an arithmetic number, because the mean of its divisors is an integer number (41811200).

Almost surely, 2^249963969 is an apocalyptic number.

It is an amenable number.

249963969 is a deficient number, since it is larger than the sum of its proper divisors (84525631).

249963969 is a wasteful number, since it uses less digits than its factorization.

249963969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301079.

The product of its digits is 5668704, while the sum is 57.

The square root of 249963969 is about 15810.2488595215. The cubic root of 249963969 is about 629.9302593498.

The spelling of 249963969 in words is "two hundred forty-nine million, nine hundred sixty-three thousand, nine hundred sixty-nine".