84688993 has 4 divisors (see below), whose sum is σ = 87420928. Its totient is φ = 81957060.

The previous prime is 84688991. The next prime is 84688997. The reversal of 84688993 is 39988648.

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 84688993 - 2¹ = 84688991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84688991) 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, 1365921 + ... + 1365982.

It is an arithmetic number, because the mean of its divisors is an integer number (21855232).

Almost surely, 2^84688993 is an apocalyptic number.

It is an amenable number.

84688993 is a deficient number, since it is larger than the sum of its proper divisors (2731935).

84688993 is a wasteful number, since it uses less digits than its factorization.

84688993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2731934.

The product of its digits is 2985984, while the sum is 55.

The square root of 84688993 is about 9202.6622778411. The cubic root of 84688993 is about 439.1460589851.

The spelling of 84688993 in words is "eighty-four million, six hundred eighty-eight thousand, nine hundred ninety-three".