249788494 has 4 divisors (see below), whose sum is σ = 374682744. Its totient is φ = 124894246.

The previous prime is 249788491. The next prime is 249788501. The reversal of 249788494 is 494887942.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249788491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62447122 + ... + 62447125.

It is an arithmetic number, because the mean of its divisors is an integer number (93670686).

Almost surely, 2^249788494 is an apocalyptic number.

249788494 is a deficient number, since it is larger than the sum of its proper divisors (124894250).

249788494 is a wasteful number, since it uses less digits than its factorization.

249788494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124894249.

The product of its digits is 4644864, while the sum is 55.

The square root of 249788494 is about 15804.6984786170. The cubic root of 249788494 is about 629.7828209163.

The spelling of 249788494 in words is "two hundred forty-nine million, seven hundred eighty-eight thousand, four hundred ninety-four".