87119973 has 12 divisors (see below), whose sum is σ = 130179660. Its totient is φ = 56077056.

The previous prime is 87119953. The next prime is 87119983. The reversal of 87119973 is 37991178.

It can be written as a sum of positive squares in 2 ways, for example, as 50722884 + 36397089 = 7122^2 + 6033^2 .

It is not a de Polignac number, because 87119973 - 2⁶ = 87119909 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87119953) 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, 166636 + ... + 167157.

It is an arithmetic number, because the mean of its divisors is an integer number (10848305).

Almost surely, 2^87119973 is an apocalyptic number.

It is an amenable number.

87119973 is a deficient number, since it is larger than the sum of its proper divisors (43059687).

87119973 is a wasteful number, since it uses less digits than its factorization.

87119973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333828 (or 333825 counting only the distinct ones).

The product of its digits is 95256, while the sum is 45.

The square root of 87119973 is about 9333.8080653075. The cubic root of 87119973 is about 443.3083491049.

The spelling of 87119973 in words is "eighty-seven million, one hundred nineteen thousand, nine hundred seventy-three".