84442151 has 4 divisors (see below), whose sum is σ = 84494592. Its totient is φ = 84389712.

The previous prime is 84442139. The next prime is 84442159. The reversal of 84442151 is 15124448.

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 84442151 - 2⁶ = 84442087 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 (84442159) 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, 23726 + ... + 27051.

It is an arithmetic number, because the mean of its divisors is an integer number (21123648).

Almost surely, 2^84442151 is an apocalyptic number.

84442151 is a deficient number, since it is larger than the sum of its proper divisors (52441).

84442151 is a wasteful number, since it uses less digits than its factorization.

84442151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52440.

The product of its digits is 5120, while the sum is 29.

The square root of 84442151 is about 9189.2410459189. The cubic root of 84442151 is about 438.7189858571.

Adding to 84442151 its reverse (15124448), we get a palindrome (99566599).

The spelling of 84442151 in words is "eighty-four million, four hundred forty-two thousand, one hundred fifty-one".