249842564 has 6 divisors (see below), whose sum is σ = 437224494. Its totient is φ = 124921280.

The previous prime is 249842543. The next prime is 249842581. The reversal of 249842564 is 465248942.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 147428164 + 102414400 = 12142^2 + 10120^2 .

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 as a sum of consecutive naturals, namely, 31230317 + ... + 31230324.

It is an arithmetic number, because the mean of its divisors is an integer number (72870749).

Almost surely, 2^249842564 is an apocalyptic number.

It is an amenable number.

249842564 is a deficient number, since it is larger than the sum of its proper divisors (187381930).

249842564 is a wasteful number, since it uses less digits than its factorization.

249842564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62460645 (or 62460643 counting only the distinct ones).

The product of its digits is 552960, while the sum is 44.

The square root of 249842564 is about 15806.4089533328. The cubic root of 249842564 is about 629.8282592254.

The spelling of 249842564 in words is "two hundred forty-nine million, eight hundred forty-two thousand, five hundred sixty-four".