84340811 has 2 divisors, whose sum is σ = 84340812. Its totient is φ = 84340810.

The previous prime is 84340771. The next prime is 84340819. The reversal of 84340811 is 11804348.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84340811 - 2²⁶ = 17231947 is a prime.

It is a super-2 number, since 2×84340811² = 14226744800275442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (84340819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42170405 + 42170406.

It is an arithmetic number, because the mean of its divisors is an integer number (42170406).

Almost surely, 2^84340811 is an apocalyptic number.

84340811 is a deficient number, since it is larger than the sum of its proper divisors (1).

84340811 is an equidigital number, since it uses as much as digits as its factorization.

84340811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 84340811 is about 9183.7253334363. The cubic root of 84340811 is about 438.5434116960.

The spelling of 84340811 in words is "eighty-four million, three hundred forty thousand, eight hundred eleven".