84122907 has 16 divisors (see below), whose sum is σ = 123838848. Its totient is φ = 50367680.

The previous prime is 84122893. The next prime is 84122911. The reversal of 84122907 is 70922148.

It is a happy number.

It is not a de Polignac number, because 84122907 - 2¹⁰ = 84121883 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (84122947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12618 + ... + 18095.

It is an arithmetic number, because the mean of its divisors is an integer number (7739928).

Almost surely, 2^84122907 is an apocalyptic number.

84122907 is a deficient number, since it is larger than the sum of its proper divisors (39715941).

84122907 is a wasteful number, since it uses less digits than its factorization.

84122907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30810.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 84122907 is about 9171.8540655638. The cubic root of 84122907 is about 438.1654105134.

The spelling of 84122907 in words is "eighty-four million, one hundred twenty-two thousand, nine hundred seven".