87408943 has 4 divisors (see below), whose sum is σ = 87463168. Its totient is φ = 87354720.

The previous prime is 87408941. The next prime is 87408967. The reversal of 87408943 is 34980478.

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 87408943 - 2¹ = 87408941 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 87408943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87408941) 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, 24618 + ... + 27943.

It is an arithmetic number, because the mean of its divisors is an integer number (21865792).

Almost surely, 2^87408943 is an apocalyptic number.

87408943 is a deficient number, since it is larger than the sum of its proper divisors (54225).

87408943 is a wasteful number, since it uses less digits than its factorization.

87408943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54224.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 87408943 is about 9349.2749986296. The cubic root of 87408943 is about 443.7979476591.

The spelling of 87408943 in words is "eighty-seven million, four hundred eight thousand, nine hundred forty-three".