249940082 has 18 divisors (see below), whose sum is σ = 436393197. Its totient is φ = 107050104.

The previous prime is 249940063. The next prime is 249940087. The reversal of 249940082 is 280049942.

It can be written as a sum of positive squares in 2 ways, for example, as 225030001 + 24910081 = 15001^2 + 4991^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=11179.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (249940087) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 155708 + ... + 157304.

Almost surely, 2^249940082 is an apocalyptic number.

249940082 is a deficient number, since it is larger than the sum of its proper divisors (186453115).

249940082 is an frugal number, since it uses more digits than its factorization.

249940082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3210 (or 1606 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 249940082 is about 15809.4934137688. The cubic root of 249940082 is about 629.9101929599.

Multiplying 249940082 by its product of nonzero digits (41472), we get a square (10365515080704 = 3219552²).

The spelling of 249940082 in words is "two hundred forty-nine million, nine hundred forty thousand, eighty-two".