86237921 has 16 divisors (see below), whose sum is σ = 108192768. Its totient is φ = 66776400.

The previous prime is 86237897. The next prime is 86237927. The reversal of 86237921 is 12973268.

It is a cyclic number.

It is not a de Polignac number, because 86237921 - 2¹⁰ = 86236897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86237927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9116 + ... + 15986.

It is an arithmetic number, because the mean of its divisors is an integer number (6762048).

Almost surely, 2^86237921 is an apocalyptic number.

It is an amenable number.

86237921 is a deficient number, since it is larger than the sum of its proper divisors (21954847).

86237921 is a wasteful number, since it uses less digits than its factorization.

86237921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7052.

The product of its digits is 36288, while the sum is 38.

The square root of 86237921 is about 9286.4374762338. The cubic root of 86237921 is about 441.8071696966.

It can be divided in two parts, 862 and 37921, that added together give a palindrome (38783).

The spelling of 86237921 in words is "eighty-six million, two hundred thirty-seven thousand, nine hundred twenty-one".