87858893 has 8 divisors (see below), whose sum is σ = 91503000. Its totient is φ = 84255808.

The previous prime is 87858887. The next prime is 87858899. The reversal of 87858893 is 39885878.

It is an interprime number because it is at equal distance from previous prime (87858887) and next prime (87858899).

It can be written as a sum of positive squares in 4 ways, for example, as 19333609 + 68525284 = 4397^2 + 8278^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87858893 - 2⁶ = 87858829 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 (87858899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5846 + ... + 14487.

It is an arithmetic number, because the mean of its divisors is an integer number (11437875).

Almost surely, 2^87858893 is an apocalyptic number.

It is an amenable number.

87858893 is a deficient number, since it is larger than the sum of its proper divisors (3644107).

87858893 is a wasteful number, since it uses less digits than its factorization.

87858893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20511.

The product of its digits is 3870720, while the sum is 56.

The square root of 87858893 is about 9373.3074738856. The cubic root of 87858893 is about 444.5581491416.

The spelling of 87858893 in words is "eighty-seven million, eight hundred fifty-eight thousand, eight hundred ninety-three".