86744417 has 4 divisors (see below), whose sum is σ = 89542656. Its totient is φ = 83946180.

The previous prime is 86744407. The next prime is 86744447. The reversal of 86744417 is 71444768.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86744417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86744407) 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, 1399073 + ... + 1399134.

It is an arithmetic number, because the mean of its divisors is an integer number (22385664).

Almost surely, 2^86744417 is an apocalyptic number.

It is an amenable number.

86744417 is a deficient number, since it is larger than the sum of its proper divisors (2798239).

86744417 is a wasteful number, since it uses less digits than its factorization.

86744417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2798238.

The product of its digits is 150528, while the sum is 41.

The square root of 86744417 is about 9313.6682891329. The cubic root of 86744417 is about 442.6704283558.

The spelling of 86744417 in words is "eighty-six million, seven hundred forty-four thousand, four hundred seventeen".