249494686 has 32 divisors (see below), whose sum is σ = 463415040. Its totient is φ = 98292096.

The previous prime is 249494683. The next prime is 249494699. The reversal of 249494686 is 686494942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249494683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1956 + ... + 22423.

It is an arithmetic number, because the mean of its divisors is an integer number (14481720).

Almost surely, 2^249494686 is an apocalyptic number.

249494686 is a deficient number, since it is larger than the sum of its proper divisors (213920354).

249494686 is a wasteful number, since it uses less digits than its factorization.

249494686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24448.

The product of its digits is 2985984, while the sum is 52.

The square root of 249494686 is about 15795.4007863049. The cubic root of 249494686 is about 629.5358014969.

The spelling of 249494686 in words is "two hundred forty-nine million, four hundred ninety-four thousand, six hundred eighty-six".