87392871 has 8 divisors (see below), whose sum is σ = 129470960. Its totient is φ = 58261896.

The previous prime is 87392867. The next prime is 87392873. The reversal of 87392871 is 17829378.

It is not a de Polignac number, because 87392871 - 2² = 87392867 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87392873) 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 7 ways as a sum of consecutive naturals, for example, 1618360 + ... + 1618413.

It is an arithmetic number, because the mean of its divisors is an integer number (16183870).

Almost surely, 2^87392871 is an apocalyptic number.

87392871 is a deficient number, since it is larger than the sum of its proper divisors (42078089).

87392871 is a wasteful number, since it uses less digits than its factorization.

87392871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3236782 (or 3236776 counting only the distinct ones).

The product of its digits is 169344, while the sum is 45.

The square root of 87392871 is about 9348.4154272262. The cubic root of 87392871 is about 443.7707454164.

The spelling of 87392871 in words is "eighty-seven million, three hundred ninety-two thousand, eight hundred seventy-one".