87396999 has 4 divisors (see below), whose sum is σ = 116529336. Its totient is φ = 58264664.

The previous prime is 87396971. The next prime is 87397001. The reversal of 87396999 is 99969378.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87396999 - 2¹⁶ = 87331463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87396299) 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 3 ways as a sum of consecutive naturals, for example, 14566164 + ... + 14566169.

It is an arithmetic number, because the mean of its divisors is an integer number (29132334).

Almost surely, 2^87396999 is an apocalyptic number.

87396999 is a deficient number, since it is larger than the sum of its proper divisors (29132337).

87396999 is a wasteful number, since it uses less digits than its factorization.

87396999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29132336.

The product of its digits is 6613488, while the sum is 60.

The square root of 87396999 is about 9348.6362106994. The cubic root of 87396999 is about 443.7777324730. Note that the first 4 decimals are identical.

The spelling of 87396999 in words is "eighty-seven million, three hundred ninety-six thousand, nine hundred ninety-nine".