249149790 has 192 divisors, whose sum is σ = 735621120. Its totient is φ = 59927040.

The previous prime is 249149723. The next prime is 249149819. The reversal of 249149790 is 97941942.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2418879 + ... + 2418981.

It is an arithmetic number, because the mean of its divisors is an integer number (3831360).

Almost surely, 2^249149790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 249149790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (367810560).

249149790 is an abundant number, since it is smaller than the sum of its proper divisors (486471330).

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

249149790 is a wasteful number, since it uses less digits than its factorization.

249149790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 249149790 is about 15784.4794022483. The cubic root of 249149790 is about 629.2455822147.

The spelling of 249149790 in words is "two hundred forty-nine million, one hundred forty-nine thousand, seven hundred ninety".