87249392 has 10 divisors (see below), whose sum is σ = 169045728. Its totient is φ = 43624688.

The previous prime is 87249359. The next prime is 87249397. The reversal of 87249392 is 29394278.

It is a super-2 number, since 2×87249392² = 15224912808739328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87249397) 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 as a sum of consecutive naturals, namely, 2726528 + ... + 2726559.

Almost surely, 2^87249392 is an apocalyptic number.

It is an amenable number.

87249392 is a deficient number, since it is larger than the sum of its proper divisors (81796336).

87249392 is a wasteful number, since it uses less digits than its factorization.

87249392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5453095 (or 5453089 counting only the distinct ones).

The product of its digits is 217728, while the sum is 44.

The square root of 87249392 is about 9340.7383005842. The cubic root of 87249392 is about 443.5277558809.

The spelling of 87249392 in words is "eighty-seven million, two hundred forty-nine thousand, three hundred ninety-two".