83449745 has 8 divisors (see below), whose sum is σ = 100192680. Its totient is φ = 66724480.

The previous prime is 83449741. The next prime is 83449747. The reversal of 83449745 is 54794438.

It can be written as a sum of positive squares in 4 ways, for example, as 421201 + 83028544 = 649^2 + 9112^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 83449745 - 2² = 83449741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 83449696 and 83449705.

It is not an unprimeable number, because it can be changed into a prime (83449741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10661 + ... + 16749.

It is an arithmetic number, because the mean of its divisors is an integer number (12524085).

Almost surely, 2^83449745 is an apocalyptic number.

It is an amenable number.

83449745 is a deficient number, since it is larger than the sum of its proper divisors (16742935).

83449745 is a wasteful number, since it uses less digits than its factorization.

83449745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8835.

The product of its digits is 483840, while the sum is 44.

The square root of 83449745 is about 9135.0831961181. The cubic root of 83449745 is about 436.9935276495.

The spelling of 83449745 in words is "eighty-three million, four hundred forty-nine thousand, seven hundred forty-five".