83155749 has 16 divisors (see below), whose sum is σ = 115450944. Its totient is φ = 53193600.

The previous prime is 83155747. The next prime is 83155753. The reversal of 83155749 is 94755138.

It is not a de Polignac number, because 83155749 - 2¹ = 83155747 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83155749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83155747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1962 + ... + 13044.

It is an arithmetic number, because the mean of its divisors is an integer number (7215684).

Almost surely, 2^83155749 is an apocalyptic number.

It is an amenable number.

83155749 is a deficient number, since it is larger than the sum of its proper divisors (32295195).

83155749 is a wasteful number, since it uses less digits than its factorization.

83155749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11188.

The product of its digits is 151200, while the sum is 42.

The square root of 83155749 is about 9118.9774097757. The cubic root of 83155749 is about 436.4797433027.

The spelling of 83155749 in words is "eighty-three million, one hundred fifty-five thousand, seven hundred forty-nine".