86271397 has 4 divisors (see below), whose sum is σ = 87363520. Its totient is φ = 85179276.

The previous prime is 86271389. The next prime is 86271401. The reversal of 86271397 is 79317268.

It is a happy number.

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 86271397 - 2³ = 86271389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86271307) 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, 545943 + ... + 546100.

It is an arithmetic number, because the mean of its divisors is an integer number (21840880).

Almost surely, 2^86271397 is an apocalyptic number.

It is an amenable number.

86271397 is a deficient number, since it is larger than the sum of its proper divisors (1092123).

86271397 is a wasteful number, since it uses less digits than its factorization.

86271397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092122.

The product of its digits is 127008, while the sum is 43.

The square root of 86271397 is about 9288.2397148222. The cubic root of 86271397 is about 441.8643294832.

It can be divided in two parts, 86271 and 397, that added together give a palindrome (86668).

The spelling of 86271397 in words is "eighty-six million, two hundred seventy-one thousand, three hundred ninety-seven".