249761948 has 12 divisors (see below), whose sum is σ = 446383392. Its totient is φ = 122223840.

The previous prime is 249761929. The next prime is 249761957. The reversal of 249761948 is 849167942.

It is a junction number, because it is equal to n+sod(n) for n = 249761896 and 249761905.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 664073 + ... + 664448.

It is an arithmetic number, because the mean of its divisors is an integer number (37198616).

Almost surely, 2^249761948 is an apocalyptic number.

It is an amenable number.

249761948 is a deficient number, since it is larger than the sum of its proper divisors (196621444).

249761948 is a wasteful number, since it uses less digits than its factorization.

249761948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328572 (or 1328570 counting only the distinct ones).

The product of its digits is 870912, while the sum is 50.

The square root of 249761948 is about 15803.8586427492. The cubic root of 249761948 is about 629.7605102983.

The spelling of 249761948 in words is "two hundred forty-nine million, seven hundred sixty-one thousand, nine hundred forty-eight".