88891885 has 4 divisors (see below), whose sum is σ = 106670268. Its totient is φ = 71113504.

The previous prime is 88891883. The next prime is 88891889. The reversal of 88891885 is 58819888.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 70073641 + 18818244 = 8371^2 + 4338^2 .

It is a cyclic number.

It is not a de Polignac number, because 88891885 - 2¹ = 88891883 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 (88891883) 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, 8889184 + ... + 8889193.

It is an arithmetic number, because the mean of its divisors is an integer number (26667567).

Almost surely, 2^88891885 is an apocalyptic number.

It is an amenable number.

88891885 is a deficient number, since it is larger than the sum of its proper divisors (17778383).

88891885 is a wasteful number, since it uses less digits than its factorization.

88891885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17778382.

The product of its digits is 1474560, while the sum is 55.

The square root of 88891885 is about 9428.2493072680. The cubic root of 88891885 is about 446.2936475705.

The spelling of 88891885 in words is "eighty-eight million, eight hundred ninety-one thousand, eight hundred eighty-five".