84222639 has 16 divisors (see below), whose sum is σ = 126822240. Its totient is φ = 55226880.

The previous prime is 84222631. The next prime is 84222647. The reversal of 84222639 is 93622248.

It is an interprime number because it is at equal distance from previous prime (84222631) and next prime (84222647).

It is not a de Polignac number, because 84222639 - 2³ = 84222631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84222631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23922 + ... + 27215.

It is an arithmetic number, because the mean of its divisors is an integer number (7926390).

Almost surely, 2^84222639 is an apocalyptic number.

84222639 is a deficient number, since it is larger than the sum of its proper divisors (42599601).

84222639 is a wasteful number, since it uses less digits than its factorization.

84222639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51207 (or 51201 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 84222639 is about 9177.2893056719. The cubic root of 84222639 is about 438.3384979497.

The spelling of 84222639 in words is "eighty-four million, two hundred twenty-two thousand, six hundred thirty-nine".