86981929 has 8 divisors (see below), whose sum is σ = 91158912. Its totient is φ = 82837920.

The previous prime is 86981927. The next prime is 86981953. The reversal of 86981929 is 92918968.

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 86981929 - 2¹ = 86981927 is a prime.

It is a super-2 number, since 2×86981929² = 15131711945122082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86981927) 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, 2757 + ... + 13474.

It is an arithmetic number, because the mean of its divisors is an integer number (11394864).

Almost surely, 2^86981929 is an apocalyptic number.

It is an amenable number.

86981929 is a deficient number, since it is larger than the sum of its proper divisors (4176983).

86981929 is a wasteful number, since it uses less digits than its factorization.

86981929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16487.

The product of its digits is 559872, while the sum is 52.

The square root of 86981929 is about 9326.4102954995. The cubic root of 86981929 is about 443.0740805578.

The spelling of 86981929 in words is "eighty-six million, nine hundred eighty-one thousand, nine hundred twenty-nine".