84207972 has 12 divisors (see below), whose sum is σ = 196485296. Its totient is φ = 28069320.

The previous prime is 84207971. The next prime is 84207983. The reversal of 84207972 is 27970248.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 84207972.

It is not an unprimeable number, because it can be changed into a prime (84207971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3508654 + ... + 3508677.

Almost surely, 2^84207972 is an apocalyptic number.

It is an amenable number.

84207972 is an abundant number, since it is smaller than the sum of its proper divisors (112277324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84207972 is a wasteful number, since it uses less digits than its factorization.

84207972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7017338 (or 7017336 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 84207972 is about 9176.4901787121. The cubic root of 84207972 is about 438.3130515690.

The spelling of 84207972 in words is "eighty-four million, two hundred seven thousand, nine hundred seventy-two".