84120867 has 12 divisors (see below), whose sum is σ = 126791184. Its totient is φ = 53642160.

The previous prime is 84120791. The next prime is 84120899. The reversal of 84120867 is 76802148.

It is not a de Polignac number, because 84120867 - 2¹¹ = 84118819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84120067) 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 11 ways as a sum of consecutive naturals, for example, 202984 + ... + 203397.

It is an arithmetic number, because the mean of its divisors is an integer number (10565932).

Almost surely, 2^84120867 is an apocalyptic number.

84120867 is a deficient number, since it is larger than the sum of its proper divisors (42670317).

84120867 is a wasteful number, since it uses less digits than its factorization.

84120867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406410 (or 406407 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 84120867 is about 9171.7428550958. The cubic root of 84120867 is about 438.1618686138.

The spelling of 84120867 in words is "eighty-four million, one hundred twenty thousand, eight hundred sixty-seven".