86689749 has 8 divisors (see below), whose sum is σ = 122385600. Its totient is φ = 54393536.

The previous prime is 86689741. The next prime is 86689789. The reversal of 86689749 is 94798668.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 86689749 - 2³ = 86689741 is a prime.

It is a super-2 number, since 2×86689749² = 15030225163366002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86689741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 849849 + ... + 849950.

It is an arithmetic number, because the mean of its divisors is an integer number (15298200).

Almost surely, 2^86689749 is an apocalyptic number.

It is an amenable number.

86689749 is a deficient number, since it is larger than the sum of its proper divisors (35695851).

86689749 is a wasteful number, since it uses less digits than its factorization.

86689749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1699819.

The product of its digits is 5225472, while the sum is 57.

The square root of 86689749 is about 9310.7330001456. The cubic root of 86689749 is about 442.5774156742.

The spelling of 86689749 in words is "eighty-six million, six hundred eighty-nine thousand, seven hundred forty-nine".