84213967 has 4 divisors (see below), whose sum is σ = 84288160. Its totient is φ = 84139776.

The previous prime is 84213929. The next prime is 84213973. The reversal of 84213967 is 76931248.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84213967 - 2⁷ = 84213839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84213907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35367 + ... + 37672.

It is an arithmetic number, because the mean of its divisors is an integer number (21072040).

Almost surely, 2^84213967 is an apocalyptic number.

84213967 is a deficient number, since it is larger than the sum of its proper divisors (74193).

84213967 is a wasteful number, since it uses less digits than its factorization.

84213967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74192.

The product of its digits is 72576, while the sum is 40.

The square root of 84213967 is about 9176.8168228422. The cubic root of 84213967 is about 438.3234528977.

The spelling of 84213967 in words is "eighty-four million, two hundred thirteen thousand, nine hundred sixty-seven".