86438073 has 4 divisors (see below), whose sum is σ = 115250768. Its totient is φ = 57625380.

The previous prime is 86438069. The next prime is 86438083. The reversal of 86438073 is 37083468.

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 not a de Polignac number, because 86438073 - 2² = 86438069 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86438063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14406343 + ... + 14406348.

It is an arithmetic number, because the mean of its divisors is an integer number (28812692).

Almost surely, 2^86438073 is an apocalyptic number.

It is an amenable number.

86438073 is a deficient number, since it is larger than the sum of its proper divisors (28812695).

86438073 is a wasteful number, since it uses less digits than its factorization.

86438073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28812694.

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 86438073 is about 9297.2078066482. The cubic root of 86438073 is about 442.1487064728.

The spelling of 86438073 in words is "eighty-six million, four hundred thirty-eight thousand, seventy-three".