83490393 has 16 divisors (see below), whose sum is σ = 128009216. Its totient is φ = 47414160.

The previous prime is 83490371. The next prime is 83490419. The reversal of 83490393 is 39309438.

It is not a de Polignac number, because 83490393 - 2⁸ = 83490137 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83490343) 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 15 ways as a sum of consecutive naturals, for example, 8773 + ... + 15618.

It is an arithmetic number, because the mean of its divisors is an integer number (8000576).

Almost surely, 2^83490393 is an apocalyptic number.

It is an amenable number.

83490393 is a deficient number, since it is larger than the sum of its proper divisors (44518823).

83490393 is a wasteful number, since it uses less digits than its factorization.

83490393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24564.

The product of its (nonzero) digits is 69984, while the sum is 39.

The square root of 83490393 is about 9137.3077544756. The cubic root of 83490393 is about 437.0644686676.

The spelling of 83490393 in words is "eighty-three million, four hundred ninety thousand, three hundred ninety-three".