249989894 has 32 divisors (see below), whose sum is σ = 469587456. Its totient is φ = 96966720.

The previous prime is 249989881. The next prime is 249989951. The reversal of 249989894 is 498989942.

249989894 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32399 + ... + 39365.

It is an arithmetic number, because the mean of its divisors is an integer number (14674608).

Almost surely, 2^249989894 is an apocalyptic number.

249989894 is a deficient number, since it is larger than the sum of its proper divisors (219597562).

249989894 is a wasteful number, since it uses less digits than its factorization.

249989894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7220.

The product of its digits is 13436928, while the sum is 62.

The square root of 249989894 is about 15811.0687178318. The cubic root of 249989894 is about 629.9520363250.

The spelling of 249989894 in words is "two hundred forty-nine million, nine hundred eighty-nine thousand, eight hundred ninety-four".