84497479 has 4 divisors (see below), whose sum is σ = 92179080. Its totient is φ = 76815880.

The previous prime is 84497467. The next prime is 84497507. The reversal of 84497479 is 97479448.

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 84497479 - 2¹³ = 84489287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84497419) 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, 3840784 + ... + 3840805.

It is an arithmetic number, because the mean of its divisors is an integer number (23044770).

Almost surely, 2^84497479 is an apocalyptic number.

84497479 is a deficient number, since it is larger than the sum of its proper divisors (7681601).

84497479 is a wasteful number, since it uses less digits than its factorization.

84497479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7681600.

The product of its digits is 2032128, while the sum is 52.

The square root of 84497479 is about 9192.2510300796. The cubic root of 84497479 is about 438.8147837662.

The spelling of 84497479 in words is "eighty-four million, four hundred ninety-seven thousand, four hundred seventy-nine".