86840437 has 8 divisors (see below), whose sum is σ = 92365056. Its totient is φ = 81362112.

The previous prime is 86840423. The next prime is 86840459. The reversal of 86840437 is 73404868.

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 86840437 - 2⁷ = 86840309 is a prime.

It is a super-2 number, since 2×86840437² = 15082522996701938, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 86840437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86840477) 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 7 ways as a sum of consecutive naturals, for example, 7663 + ... + 15244.

It is an arithmetic number, because the mean of its divisors is an integer number (11545632).

Almost surely, 2^86840437 is an apocalyptic number.

It is an amenable number.

86840437 is a deficient number, since it is larger than the sum of its proper divisors (5524619).

86840437 is a wasteful number, since it uses less digits than its factorization.

86840437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23147.

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 86840437 is about 9318.8216529774. The cubic root of 86840437 is about 442.8337031893.

The spelling of 86840437 in words is "eighty-six million, eight hundred forty thousand, four hundred thirty-seven".