83744891 has 2 divisors, whose sum is σ = 83744892. Its totient is φ = 83744890.

The previous prime is 83744861. The next prime is 83744911. The reversal of 83744891 is 19844738.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83744891 - 2¹⁴ = 83728507 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (83744821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41872445 + 41872446.

It is an arithmetic number, because the mean of its divisors is an integer number (41872446).

Almost surely, 2^83744891 is an apocalyptic number.

83744891 is a deficient number, since it is larger than the sum of its proper divisors (1).

83744891 is an equidigital number, since it uses as much as digits as its factorization.

83744891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 44.

The square root of 83744891 is about 9151.2234701159. The cubic root of 83744891 is about 437.5081093463.

The spelling of 83744891 in words is "eighty-three million, seven hundred forty-four thousand, eight hundred ninety-one".