83947291 has 2 divisors, whose sum is σ = 83947292. Its totient is φ = 83947290.

The previous prime is 83947277. The next prime is 83947313. The reversal of 83947291 is 19274938.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83947291 - 2¹³ = 83939099 is a prime.

It is not a weakly prime, because it can be changed into another prime (83947211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41973645 + 41973646.

It is an arithmetic number, because the mean of its divisors is an integer number (41973646).

Almost surely, 2^83947291 is an apocalyptic number.

83947291 is a deficient number, since it is larger than the sum of its proper divisors (1).

83947291 is an equidigital number, since it uses as much as digits as its factorization.

83947291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 43.

The square root of 83947291 is about 9162.2754269886. The cubic root of 83947291 is about 437.8602916180.

The spelling of 83947291 in words is "eighty-three million, nine hundred forty-seven thousand, two hundred ninety-one".