86378837 has 4 divisors (see below), whose sum is σ = 87472320. Its totient is φ = 85285356.

The previous prime is 86378833. The next prime is 86378839. The reversal of 86378837 is 73887368.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86378837 - 2² = 86378833 is a prime.

It is a super-2 number, since 2×86378837² = 14922606962945138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86378833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 546623 + ... + 546780.

It is an arithmetic number, because the mean of its divisors is an integer number (21868080).

Almost surely, 2^86378837 is an apocalyptic number.

It is an amenable number.

86378837 is a deficient number, since it is larger than the sum of its proper divisors (1093483).

86378837 is a wasteful number, since it uses less digits than its factorization.

86378837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1093482.

The product of its digits is 1354752, while the sum is 50.

The square root of 86378837 is about 9294.0215730328. The cubic root of 86378837 is about 442.0476819085.

The spelling of 86378837 in words is "eighty-six million, three hundred seventy-eight thousand, eight hundred thirty-seven".