249763945 has 8 divisors (see below), whose sum is σ = 302005440. Its totient is φ = 198285360.

The previous prime is 249763939. The next prime is 249763963. The reversal of 249763945 is 549367942.

249763945 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 249763945 - 2³ = 249763937 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190005 + ... + 191314.

It is an arithmetic number, because the mean of its divisors is an integer number (37750680).

Almost surely, 2^249763945 is an apocalyptic number.

It is an amenable number.

249763945 is a deficient number, since it is larger than the sum of its proper divisors (52241495).

249763945 is a wasteful number, since it uses less digits than its factorization.

249763945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381455.

The product of its digits is 1632960, while the sum is 49.

The square root of 249763945 is about 15803.9218233956. The cubic root of 249763945 is about 629.7621887344.

The spelling of 249763945 in words is "two hundred forty-nine million, seven hundred sixty-three thousand, nine hundred forty-five".