84428486 has 4 divisors (see below), whose sum is σ = 126642732. Its totient is φ = 42214242.

The previous prime is 84428473. The next prime is 84428489. The reversal of 84428486 is 68482448.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84428489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21107120 + ... + 21107123.

It is an arithmetic number, because the mean of its divisors is an integer number (31660683).

Almost surely, 2^84428486 is an apocalyptic number.

84428486 is a deficient number, since it is larger than the sum of its proper divisors (42214246).

84428486 is a wasteful number, since it uses less digits than its factorization.

84428486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42214245.

The product of its digits is 393216, while the sum is 44.

The square root of 84428486 is about 9188.4974832668. The cubic root of 84428486 is about 438.6953190892.

The spelling of 84428486 in words is "eighty-four million, four hundred twenty-eight thousand, four hundred eighty-six".