83504749 has 2 divisors, whose sum is σ = 83504750. Its totient is φ = 83504748.

The previous prime is 83504747. The next prime is 83504761. The reversal of 83504749 is 94740538.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66015625 + 17489124 = 8125^2 + 4182^2 .

It is a cyclic number.

It is not a de Polignac number, because 83504749 - 2¹ = 83504747 is a prime.

Together with 83504747, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83504747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41752374 + 41752375.

It is an arithmetic number, because the mean of its divisors is an integer number (41752375).

Almost surely, 2^83504749 is an apocalyptic number.

It is an amenable number.

83504749 is a deficient number, since it is larger than the sum of its proper divisors (1).

83504749 is an equidigital number, since it uses as much as digits as its factorization.

83504749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 83504749 is about 9138.0932912725. The cubic root of 83504749 is about 437.0895180084.

The spelling of 83504749 in words is "eighty-three million, five hundred four thousand, seven hundred forty-nine".