88644859 has 4 divisors (see below), whose sum is σ = 91040704. Its totient is φ = 86249016.

The previous prime is 88644847. The next prime is 88644863. The reversal of 88644859 is 95844688.

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 88644859 - 2¹⁷ = 88513787 is a prime.

It is a super-2 number, since 2×88644859² = 15715822054259762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88644889) 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, 1197867 + ... + 1197940.

It is an arithmetic number, because the mean of its divisors is an integer number (22760176).

Almost surely, 2^88644859 is an apocalyptic number.

88644859 is a deficient number, since it is larger than the sum of its proper divisors (2395845).

88644859 is a wasteful number, since it uses less digits than its factorization.

88644859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2395844.

The product of its digits is 2211840, while the sum is 52.

The square root of 88644859 is about 9415.1398821260. The cubic root of 88644859 is about 445.8798549604.

The spelling of 88644859 in words is "eighty-eight million, six hundred forty-four thousand, eight hundred fifty-nine".