83749427 has 2 divisors, whose sum is σ = 83749428. Its totient is φ = 83749426.

The previous prime is 83749357. The next prime is 83749439. The reversal of 83749427 is 72494738.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83749427 - 2¹⁰ = 83748403 is a prime.

It is not a weakly prime, because it can be changed into another prime (83749447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41874713 + 41874714.

It is an arithmetic number, because the mean of its divisors is an integer number (41874714).

Almost surely, 2^83749427 is an apocalyptic number.

83749427 is a deficient number, since it is larger than the sum of its proper divisors (1).

83749427 is an equidigital number, since it uses as much as digits as its factorization.

83749427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 338688, while the sum is 44.

The square root of 83749427 is about 9151.4713024737. The cubic root of 83749427 is about 437.5160083394.

The spelling of 83749427 in words is "eighty-three million, seven hundred forty-nine thousand, four hundred twenty-seven".