87369939 has 12 divisors (see below), whose sum is σ = 131688336. Its totient is φ = 55714032.

The previous prime is 87369929. The next prime is 87369983. The reversal of 87369939 is 93996378.

It is not a de Polignac number, because 87369939 - 2¹⁹ = 86845651 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87369929) 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 11 ways as a sum of consecutive naturals, for example, 210832 + ... + 211245.

It is an arithmetic number, because the mean of its divisors is an integer number (10974028).

Almost surely, 2^87369939 is an apocalyptic number.

87369939 is a deficient number, since it is larger than the sum of its proper divisors (44318397).

87369939 is a wasteful number, since it uses less digits than its factorization.

87369939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422106 (or 422103 counting only the distinct ones).

The product of its digits is 2204496, while the sum is 54.

The square root of 87369939 is about 9347.1888287335. The cubic root of 87369939 is about 443.7319266857.

The spelling of 87369939 in words is "eighty-seven million, three hundred sixty-nine thousand, nine hundred thirty-nine".