83251749 has 32 divisors (see below), whose sum is σ = 134599680. Its totient is φ = 44710272.

The previous prime is 83251747. The next prime is 83251783. The reversal of 83251749 is 94715238.

It is not a de Polignac number, because 83251749 - 2¹ = 83251747 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83251747) 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 in 31 ways as a sum of consecutive naturals, for example, 53902 + ... + 55424.

It is an arithmetic number, because the mean of its divisors is an integer number (4206240).

Almost surely, 2^83251749 is an apocalyptic number.

It is an amenable number.

83251749 is a deficient number, since it is larger than the sum of its proper divisors (51347931).

83251749 is a wasteful number, since it uses less digits than its factorization.

83251749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1689.

The product of its digits is 60480, while the sum is 39.

The square root of 83251749 is about 9124.2396395535. The cubic root of 83251749 is about 436.6476448667.

The spelling of 83251749 in words is "eighty-three million, two hundred fifty-one thousand, seven hundred forty-nine".