83709413 has 4 divisors (see below), whose sum is σ = 85751148. Its totient is φ = 81667680.

The previous prime is 83709407. The next prime is 83709463. The reversal of 83709413 is 31490738.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31490738 = 2 ⋅15745369.

It can be written as a sum of positive squares in 2 ways, for example, as 29789764 + 53919649 = 5458^2 + 7343^2 .

It is a cyclic number.

It is not a de Polignac number, because 83709413 - 2⁶ = 83709349 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 (83709463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1020806 + ... + 1020887.

It is an arithmetic number, because the mean of its divisors is an integer number (21437787).

Almost surely, 2^83709413 is an apocalyptic number.

It is an amenable number.

83709413 is a deficient number, since it is larger than the sum of its proper divisors (2041735).

83709413 is a wasteful number, since it uses less digits than its factorization.

83709413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2041734.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 83709413 is about 9149.2848354393. The cubic root of 83709413 is about 437.4463180937.

The spelling of 83709413 in words is "eighty-three million, seven hundred nine thousand, four hundred thirteen".