84304991 has 4 divisors (see below), whose sum is σ = 84388584. Its totient is φ = 84221400.

The previous prime is 84304967. The next prime is 84305017. The reversal of 84304991 is 19940348.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84304991 is a prime.

It is a super-3 number, since 3×84304991³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84304901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40265 + ... + 42306.

It is an arithmetic number, because the mean of its divisors is an integer number (21097146).

Almost surely, 2^84304991 is an apocalyptic number.

84304991 is a deficient number, since it is larger than the sum of its proper divisors (83593).

84304991 is a wasteful number, since it uses less digits than its factorization.

84304991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83592.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 84304991 is about 9181.7749373419. The cubic root of 84304991 is about 438.4813189828.

The spelling of 84304991 in words is "eighty-four million, three hundred four thousand, nine hundred ninety-one".