87945983 has 4 divisors (see below), whose sum is σ = 88232760. Its totient is φ = 87659208.

The previous prime is 87945971. The next prime is 87946013. The reversal of 87945983 is 38954978.

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 87945983 - 2⁴ = 87945967 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 (87945953) 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, 142928 + ... + 143541.

It is an arithmetic number, because the mean of its divisors is an integer number (22058190).

Almost surely, 2^87945983 is an apocalyptic number.

87945983 is a deficient number, since it is larger than the sum of its proper divisors (286777).

87945983 is a wasteful number, since it uses less digits than its factorization.

87945983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286776.

The product of its digits is 2177280, while the sum is 53.

The square root of 87945983 is about 9377.9519619158. The cubic root of 87945983 is about 444.7049898402.

The spelling of 87945983 in words is "eighty-seven million, nine hundred forty-five thousand, nine hundred eighty-three".