87299847 has 12 divisors (see below), whose sum is σ = 129032904. Its totient is φ = 56846160.

The previous prime is 87299843. The next prime is 87299867. The reversal of 87299847 is 74899278.

It is not a de Polignac number, because 87299847 - 2² = 87299843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87299793 and 87299802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87299843) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112404 + ... + 113177.

It is an arithmetic number, because the mean of its divisors is an integer number (10752742).

Almost surely, 2^87299847 is an apocalyptic number.

87299847 is a deficient number, since it is larger than the sum of its proper divisors (41733057).

87299847 is a wasteful number, since it uses less digits than its factorization.

87299847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225630 (or 225627 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 54.

The square root of 87299847 is about 9343.4387138783. The cubic root of 87299847 is about 443.6132345306.

The spelling of 87299847 in words is "eighty-seven million, two hundred ninety-nine thousand, eight hundred forty-seven".