249089859 has 12 divisors (see below), whose sum is σ = 360402952. Its totient is φ = 165780000.

The previous prime is 249089857. The next prime is 249089879. The reversal of 249089859 is 958980942.

It is not a de Polignac number, because 249089859 - 2¹ = 249089857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (249089851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17617 + ... + 28434.

Almost surely, 2^249089859 is an apocalyptic number.

249089859 is a deficient number, since it is larger than the sum of its proper divisors (111313093).

249089859 is a wasteful number, since it uses less digits than its factorization.

249089859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46658 (or 46655 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 54.

The square root of 249089859 is about 15782.5808725950. The cubic root of 249089859 is about 629.1951248291.

The spelling of 249089859 in words is "two hundred forty-nine million, eighty-nine thousand, eight hundred fifty-nine".