249033939 has 32 divisors (see below), whose sum is σ = 425181696. Its totient is φ = 125867520.

The previous prime is 249033923. The next prime is 249033971. The reversal of 249033939 is 939330942.

It is not a de Polignac number, because 249033939 - 2⁴ = 249033923 is a prime.

It is a super-3 number, since 3×249033939³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 249033939.

It is not an unprimeable number, because it can be changed into a prime (249033979) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 6022 + ... + 23115.

It is an arithmetic number, because the mean of its divisors is an integer number (13286928).

Almost surely, 2^249033939 is an apocalyptic number.

249033939 is a deficient number, since it is larger than the sum of its proper divisors (176147757).

249033939 is a wasteful number, since it uses less digits than its factorization.

249033939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29195.

The product of its (nonzero) digits is 157464, while the sum is 42.

The square root of 249033939 is about 15780.8091997844. The cubic root of 249033939 is about 629.1480371037.

The spelling of 249033939 in words is "two hundred forty-nine million, thirty-three thousand, nine hundred thirty-nine".