84819513 has 4 divisors (see below), whose sum is σ = 113092688. Its totient is φ = 56546340.

The previous prime is 84819491. The next prime is 84819517. The reversal of 84819513 is 31591848.

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 de Polignac number, because none of the positive numbers 2^k-84819513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84819517) 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, 14136583 + ... + 14136588.

It is an arithmetic number, because the mean of its divisors is an integer number (28273172).

Almost surely, 2^84819513 is an apocalyptic number.

It is an amenable number.

84819513 is a deficient number, since it is larger than the sum of its proper divisors (28273175).

84819513 is a wasteful number, since it uses less digits than its factorization.

84819513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28273174.

The product of its digits is 34560, while the sum is 39.

The square root of 84819513 is about 9209.7509738320. The cubic root of 84819513 is about 439.3715425320.

The spelling of 84819513 in words is "eighty-four million, eight hundred nineteen thousand, five hundred thirteen".