249894886 has 4 divisors (see below), whose sum is σ = 374842332. Its totient is φ = 124947442.

The previous prime is 249894881. The next prime is 249894893. The reversal of 249894886 is 688498942.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 249894886.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249894881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62473720 + ... + 62473723.

It is an arithmetic number, because the mean of its divisors is an integer number (93710583).

Almost surely, 2^249894886 is an apocalyptic number.

249894886 is a deficient number, since it is larger than the sum of its proper divisors (124947446).

249894886 is a wasteful number, since it uses less digits than its factorization.

249894886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124947445.

The product of its digits is 7962624, while the sum is 58.

The square root of 249894886 is about 15808.0639548301. The cubic root of 249894886 is about 629.8722223430.

The spelling of 249894886 in words is "two hundred forty-nine million, eight hundred ninety-four thousand, eight hundred eighty-six".