87399827 has 4 divisors (see below), whose sum is σ = 88881240. Its totient is φ = 85918416.

The previous prime is 87399821. The next prime is 87399853. The reversal of 87399827 is 72899378.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87399827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87399821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 740618 + ... + 740735.

It is an arithmetic number, because the mean of its divisors is an integer number (22220310).

Almost surely, 2^87399827 is an apocalyptic number.

87399827 is a deficient number, since it is larger than the sum of its proper divisors (1481413).

87399827 is a wasteful number, since it uses less digits than its factorization.

87399827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1481412.

The product of its digits is 1524096, while the sum is 53.

The square root of 87399827 is about 9348.7874614840. The cubic root of 87399827 is about 443.7825190214.

The spelling of 87399827 in words is "eighty-seven million, three hundred ninety-nine thousand, eight hundred twenty-seven".