84213912 has 32 divisors (see below), whose sum is σ = 217796400. Its totient is φ = 27103104.

The previous prime is 84213907. The next prime is 84213917. The reversal of 84213912 is 21931248.

It is an interprime number because it is at equal distance from previous prime (84213907) and next prime (84213917).

It is a self number, because there is not a number n which added to its sum of digits gives 84213912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84213917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59803 + ... + 61194.

Almost surely, 2^84213912 is an apocalyptic number.

It is an amenable number.

84213912 is an abundant number, since it is smaller than the sum of its proper divisors (133582488).

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

84213912 is a wasteful number, since it uses less digits than its factorization.

84213912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121035 (or 121031 counting only the distinct ones).

The product of its digits is 3456, while the sum is 30.

The square root of 84213912 is about 9176.8138261599. The cubic root of 84213912 is about 438.3233574750.

The spelling of 84213912 in words is "eighty-four million, two hundred thirteen thousand, nine hundred twelve".