86193021 has 16 divisors (see below), whose sum is σ = 116999168. Its totient is φ = 56430000.

The previous prime is 86193011. The next prime is 86193031. The reversal of 86193021 is 12039168.

It is an interprime number because it is at equal distance from previous prime (86193011) and next prime (86193031).

It is not a de Polignac number, because 86193021 - 2¹⁴ = 86176637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 86193021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86193011) 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, 114396 + ... + 115146.

It is an arithmetic number, because the mean of its divisors is an integer number (7312448).

Almost surely, 2^86193021 is an apocalyptic number.

It is an amenable number.

86193021 is a deficient number, since it is larger than the sum of its proper divisors (30806147).

86193021 is a wasteful number, since it uses less digits than its factorization.

86193021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1392.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 86193021 is about 9284.0196574544. The cubic root of 86193021 is about 441.7304803646.

The spelling of 86193021 in words is "eighty-six million, one hundred ninety-three thousand, twenty-one".