86744889 has 96 divisors (see below), whose sum is σ = 166053888. Its totient is φ = 42336000.

The previous prime is 86744873. The next prime is 86744893. The reversal of 86744889 is 98844768.

It is not a de Polignac number, because 86744889 - 2⁴ = 86744873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86744389) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1221724 + ... + 1221794.

It is an arithmetic number, because the mean of its divisors is an integer number (1729728).

Almost surely, 2^86744889 is an apocalyptic number.

It is an amenable number.

86744889 is a deficient number, since it is larger than the sum of its proper divisors (79308999).

86744889 is a wasteful number, since it uses less digits than its factorization.

86744889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179 (or 176 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 54.

The square root of 86744889 is about 9313.6936282014. The cubic root of 86744889 is about 442.6712312511.

The spelling of 86744889 in words is "eighty-six million, seven hundred forty-four thousand, eight hundred eighty-nine".