84380939 has 8 divisors (see below), whose sum is σ = 85892160. Its totient is φ = 82877256.

The previous prime is 84380917. The next prime is 84380941. The reversal of 84380939 is 93908348.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 84380939 - 2¹² = 84376843 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 84380939.

It is not an unprimeable number, because it can be changed into a prime (84380909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23732 + ... + 27054.

It is an arithmetic number, because the mean of its divisors is an integer number (10736520).

Almost surely, 2^84380939 is an apocalyptic number.

84380939 is a deficient number, since it is larger than the sum of its proper divisors (1511221).

84380939 is a wasteful number, since it uses less digits than its factorization.

84380939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3769.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 84380939 is about 9185.9098079613. The cubic root of 84380939 is about 438.6129513002.

The spelling of 84380939 in words is "eighty-four million, three hundred eighty thousand, nine hundred thirty-nine".