84428914 has 4 divisors (see below), whose sum is σ = 126643374. Its totient is φ = 42214456.

The previous prime is 84428899. The next prime is 84428921. The reversal of 84428914 is 41982448.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 62964225 + 21464689 = 7935^2 + 4633^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21107227 + ... + 21107230.

Almost surely, 2^84428914 is an apocalyptic number.

84428914 is a deficient number, since it is larger than the sum of its proper divisors (42214460).

84428914 is a wasteful number, since it uses less digits than its factorization.

84428914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42214459.

The product of its digits is 73728, while the sum is 40.

The square root of 84428914 is about 9188.5207732257. The cubic root of 84428914 is about 438.6960603922.

The spelling of 84428914 in words is "eighty-four million, four hundred twenty-eight thousand, nine hundred fourteen".