249194980 has 12 divisors (see below), whose sum is σ = 523309500. Its totient is φ = 99677984.

The previous prime is 249194971. The next prime is 249194983. The reversal of 249194980 is 89491942.

It can be written as a sum of positive squares in 2 ways, for example, as 173817856 + 75377124 = 13184^2 + 8682^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 249194980.

It is not an unprimeable number, because it can be changed into a prime (249194983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6229855 + ... + 6229894.

It is an arithmetic number, because the mean of its divisors is an integer number (43609125).

Almost surely, 2^249194980 is an apocalyptic number.

249194980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

249194980 is an abundant number, since it is smaller than the sum of its proper divisors (274114520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

249194980 is a wasteful number, since it uses less digits than its factorization.

249194980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12459758 (or 12459756 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 249194980 is about 15785.9108067922. The cubic root of 249194980 is about 629.2836234386.

The spelling of 249194980 in words is "two hundred forty-nine million, one hundred ninety-four thousand, nine hundred eighty".