84458879 has 4 divisors (see below), whose sum is σ = 84625320. Its totient is φ = 84292440.

The previous prime is 84458851. The next prime is 84458897. The reversal of 84458879 is 97885448.

It is a happy number.

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 84458879 - 2⁸ = 84458623 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84458879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84458809) 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, 82457 + ... + 83474.

It is an arithmetic number, because the mean of its divisors is an integer number (21156330).

Almost surely, 2^84458879 is an apocalyptic number.

84458879 is a deficient number, since it is larger than the sum of its proper divisors (166441).

84458879 is a wasteful number, since it uses less digits than its factorization.

84458879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166440.

The product of its digits is 2580480, while the sum is 53.

The square root of 84458879 is about 9190.1511957095. The cubic root of 84458879 is about 438.7479540385.

The spelling of 84458879 in words is "eighty-four million, four hundred fifty-eight thousand, eight hundred seventy-nine".