249171234 has 48 divisors (see below), whose sum is σ = 547383744. Its totient is φ = 75566400.

The previous prime is 249171233. The next prime is 249171239. The reversal of 249171234 is 432171942.

It is a junction number, because it is equal to n+sod(n) for n = 249171195 and 249171204.

It is not an unprimeable number, because it can be changed into a prime (249171233) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 70264 + ... + 73724.

It is an arithmetic number, because the mean of its divisors is an integer number (11403828).

Almost surely, 2^249171234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 249171234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273691872).

249171234 is an abundant number, since it is smaller than the sum of its proper divisors (298212510).

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

249171234 is a wasteful number, since it uses less digits than its factorization.

249171234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3563 (or 3550 counting only the distinct ones).

The product of its digits is 12096, while the sum is 33.

The square root of 249171234 is about 15785.1586624905. The cubic root of 249171234 is about 629.2636344811.

The spelling of 249171234 in words is "two hundred forty-nine million, one hundred seventy-one thousand, two hundred thirty-four".