88831861 has 4 divisors (see below), whose sum is σ = 88893324. Its totient is φ = 88770400.

The previous prime is 88831849. The next prime is 88831889. The reversal of 88831861 is 16813888.

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 25310961 + 63520900 = 5031^2 + 7970^2 .

It is a cyclic number.

It is not a de Polignac number, because 88831861 - 2⁷ = 88831733 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 (88831891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28510 + ... + 31471.

It is an arithmetic number, because the mean of its divisors is an integer number (22223331).

Almost surely, 2^88831861 is an apocalyptic number.

It is an amenable number.

88831861 is a deficient number, since it is larger than the sum of its proper divisors (61463).

88831861 is a wasteful number, since it uses less digits than its factorization.

88831861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61462.

The product of its digits is 73728, while the sum is 43.

The square root of 88831861 is about 9425.0655700637. The cubic root of 88831861 is about 446.1931721006.

The spelling of 88831861 in words is "eighty-eight million, eight hundred thirty-one thousand, eight hundred sixty-one".