83438545 has 8 divisors (see below), whose sum is σ = 101768040. Its totient is φ = 65656320.

The previous prime is 83438543. The next prime is 83438569. The reversal of 83438545 is 54583438.

It can be written as a sum of positive squares in 4 ways, for example, as 6718464 + 76720081 = 2592^2 + 8759^2 .

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

It is not a de Polignac number, because 83438545 - 2¹ = 83438543 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 83438498 and 83438507.

It is not an unprimeable number, because it can be changed into a prime (83438543) 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, 136480 + ... + 137089.

It is an arithmetic number, because the mean of its divisors is an integer number (12721005).

Almost surely, 2^83438545 is an apocalyptic number.

It is an amenable number.

83438545 is a deficient number, since it is larger than the sum of its proper divisors (18329495).

83438545 is a wasteful number, since it uses less digits than its factorization.

83438545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273635.

The product of its digits is 230400, while the sum is 40.

The square root of 83438545 is about 9134.4701543111. The cubic root of 83438545 is about 436.9739767749.

The spelling of 83438545 in words is "eighty-three million, four hundred thirty-eight thousand, five hundred forty-five".