87449983 has 4 divisors (see below), whose sum is σ = 87813088. Its totient is φ = 87086880.

The previous prime is 87449963. The next prime is 87450001. The reversal of 87449983 is 38994478.

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 87449983 - 2¹⁷ = 87318911 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87449983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87449903) 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, 181191 + ... + 181672.

It is an arithmetic number, because the mean of its divisors is an integer number (21953272).

Almost surely, 2^87449983 is an apocalyptic number.

87449983 is a deficient number, since it is larger than the sum of its proper divisors (363105).

87449983 is a wasteful number, since it uses less digits than its factorization.

87449983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363104.

The product of its digits is 1741824, while the sum is 52.

The square root of 87449983 is about 9351.4695636568. The cubic root of 87449983 is about 443.8673937111.

The spelling of 87449983 in words is "eighty-seven million, four hundred forty-nine thousand, nine hundred eighty-three".