84087967 has 4 divisors (see below), whose sum is σ = 89034336. Its totient is φ = 79141600.

The previous prime is 84087959. The next prime is 84087973. The reversal of 84087967 is 76978048.

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 84087967 - 2³ = 84087959 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84087967.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84087917) 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, 2473159 + ... + 2473192.

It is an arithmetic number, because the mean of its divisors is an integer number (22258584).

Almost surely, 2^84087967 is an apocalyptic number.

84087967 is a deficient number, since it is larger than the sum of its proper divisors (4946369).

84087967 is a wasteful number, since it uses less digits than its factorization.

84087967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4946368.

The product of its (nonzero) digits is 677376, while the sum is 49.

The square root of 84087967 is about 9169.9491274489. The cubic root of 84087967 is about 438.1047388919.

The spelling of 84087967 in words is "eighty-four million, eighty-seven thousand, nine hundred sixty-seven".