84049943 has 2 divisors, whose sum is σ = 84049944. Its totient is φ = 84049942.

The previous prime is 84049919. The next prime is 84049961. The reversal of 84049943 is 34994048.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84049943 is a prime.

It is equal to p_4891847 and since 84049943 and 4891847 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84049943.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84049963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42024971 + 42024972.

It is an arithmetic number, because the mean of its divisors is an integer number (42024972).

Almost surely, 2^84049943 is an apocalyptic number.

84049943 is a deficient number, since it is larger than the sum of its proper divisors (1).

84049943 is an equidigital number, since it uses as much as digits as its factorization.

84049943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 84049943 is about 9167.8755990687. The cubic root of 84049943 is about 438.0386929531.

The spelling of 84049943 in words is "eighty-four million, forty-nine thousand, nine hundred forty-three".