249465089 has 12 divisors (see below), whose sum is σ = 266323728. Its totient is φ = 233620800.

The previous prime is 249465077. The next prime is 249465121. The reversal of 249465089 is 980564942.

It is a de Polignac number, because none of the positive numbers 2^k-249465089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (249465289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58934 + ... + 63024.

It is an arithmetic number, because the mean of its divisors is an integer number (22193644).

Almost surely, 2^249465089 is an apocalyptic number.

It is an amenable number.

249465089 is a deficient number, since it is larger than the sum of its proper divisors (16858639).

249465089 is a wasteful number, since it uses less digits than its factorization.

249465089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4336 (or 4319 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 47.

The square root of 249465089 is about 15794.4638718761. The cubic root of 249465089 is about 629.5109070349.

The spelling of 249465089 in words is "two hundred forty-nine million, four hundred sixty-five thousand, eighty-nine".