86974909 has 16 divisors (see below), whose sum is σ = 101692800. Its totient is φ = 72846144.

The previous prime is 86974903. The next prime is 86974919. The reversal of 86974909 is 90947968.

It is not a de Polignac number, because 86974909 - 2¹⁹ = 86450621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86974903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80827 + ... + 81895.

It is an arithmetic number, because the mean of its divisors is an integer number (6355800).

Almost surely, 2^86974909 is an apocalyptic number.

It is an amenable number.

86974909 is a deficient number, since it is larger than the sum of its proper divisors (14717891).

86974909 is a wasteful number, since it uses less digits than its factorization.

86974909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332.

The product of its (nonzero) digits is 979776, while the sum is 52.

The square root of 86974909 is about 9326.0339373176. The cubic root of 86974909 is about 443.0621605963.

The spelling of 86974909 in words is "eighty-six million, nine hundred seventy-four thousand, nine hundred nine".