86993449 has 4 divisors (see below), whose sum is σ = 87013060. Its totient is φ = 86973840.

The previous prime is 86993441. The next prime is 86993453. The reversal of 86993449 is 94439968.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 53758224 + 33235225 = 7332^2 + 5765^2 .

It is a cyclic number.

It is not a de Polignac number, because 86993449 - 2³ = 86993441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 86993396 and 86993405.

It is not an unprimeable number, because it can be changed into a prime (86993441) 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, 367 + ... + 13195.

It is an arithmetic number, because the mean of its divisors is an integer number (21753265).

Almost surely, 2^86993449 is an apocalyptic number.

It is an amenable number.

86993449 is a deficient number, since it is larger than the sum of its proper divisors (19611).

86993449 is a wasteful number, since it uses less digits than its factorization.

86993449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19610.

The product of its digits is 1679616, while the sum is 52.

The square root of 86993449 is about 9327.0278760171. The cubic root of 86993449 is about 443.0936401304.

The spelling of 86993449 in words is "eighty-six million, nine hundred ninety-three thousand, four hundred forty-nine".