83547397 has 4 divisors (see below), whose sum is σ = 83570796. Its totient is φ = 83524000.

The previous prime is 83547391. The next prime is 83547413. The reversal of 83547397 is 79374538.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79374538 = 2 ⋅39687269.

It can be written as a sum of positive squares in 2 ways, for example, as 25391521 + 58155876 = 5039^2 + 7626^2 .

It is a cyclic number.

It is not a de Polignac number, because 83547397 - 2¹¹ = 83545349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83547391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5104 + ... + 13897.

It is an arithmetic number, because the mean of its divisors is an integer number (20892699).

Almost surely, 2^83547397 is an apocalyptic number.

It is an amenable number.

83547397 is a deficient number, since it is larger than the sum of its proper divisors (23399).

83547397 is a wasteful number, since it uses less digits than its factorization.

83547397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23398.

The product of its digits is 635040, while the sum is 46.

The square root of 83547397 is about 9140.4265217768. The cubic root of 83547397 is about 437.1639162568.

It can be divided in two parts, 8354 and 7397, that added together give a palindrome (15751).

The spelling of 83547397 in words is "eighty-three million, five hundred forty-seven thousand, three hundred ninety-seven".