83946649 has 2 divisors, whose sum is σ = 83946650. Its totient is φ = 83946648.

The previous prime is 83946641. The next prime is 83946659. The reversal of 83946649 is 94664938.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77352025 + 6594624 = 8795^2 + 2568^2 .

It is a cyclic number.

It is not a de Polignac number, because 83946649 - 2³ = 83946641 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (83946641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41973324 + 41973325.

It is an arithmetic number, because the mean of its divisors is an integer number (41973325).

Almost surely, 2^83946649 is an apocalyptic number.

It is an amenable number.

83946649 is a deficient number, since it is larger than the sum of its proper divisors (1).

83946649 is an equidigital number, since it uses as much as digits as its factorization.

83946649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1119744, while the sum is 49.

The square root of 83946649 is about 9162.2403919565. The cubic root of 83946649 is about 437.8591754136.

The spelling of 83946649 in words is "eighty-three million, nine hundred forty-six thousand, six hundred forty-nine".