84044047 has 4 divisors (see below), whose sum is σ = 87698160. Its totient is φ = 80389936.

The previous prime is 84044029. The next prime is 84044053. The reversal of 84044047 is 74044048.

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

It is a cyclic number.

It is not a de Polignac number, because 84044047 - 2²³ = 75655439 is a prime.

It is a super-2 number, since 2×84044047² = 14126803672276418, which contains 22 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 (84044647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1827022 + ... + 1827067.

It is an arithmetic number, because the mean of its divisors is an integer number (21924540).

Almost surely, 2^84044047 is an apocalyptic number.

84044047 is a deficient number, since it is larger than the sum of its proper divisors (3654113).

84044047 is a wasteful number, since it uses less digits than its factorization.

84044047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3654112.

The product of its (nonzero) digits is 14336, while the sum is 31.

The square root of 84044047 is about 9167.5540358375. The cubic root of 84044047 is about 438.0284500886.

Subtracting from 84044047 its reverse (74044048), we obtain a palindrome (9999999).

The spelling of 84044047 in words is "eighty-four million, forty-four thousand, forty-seven".