249033945 has 8 divisors (see below), whose sum is σ = 398454336. Its totient is φ = 132818096.

The previous prime is 249033923. The next prime is 249033971. The reversal of 249033945 is 549330942.

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

It is a cyclic number.

It is not a de Polignac number, because 249033945 - 2⁵ = 249033913 is a prime.

It is a super-3 number, since 3×249033945³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8301117 + ... + 8301146.

It is an arithmetic number, because the mean of its divisors is an integer number (49806792).

Almost surely, 2^249033945 is an apocalyptic number.

It is an amenable number.

249033945 is a deficient number, since it is larger than the sum of its proper divisors (149420391).

249033945 is a wasteful number, since it uses less digits than its factorization.

249033945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16602271.

The product of its (nonzero) digits is 116640, while the sum is 39.

The square root of 249033945 is about 15780.8093898887. The cubic root of 249033945 is about 629.1480421564.

The spelling of 249033945 in words is "two hundred forty-nine million, thirty-three thousand, nine hundred forty-five".