83990343 has 4 divisors (see below), whose sum is σ = 111987128. Its totient is φ = 55993560.

The previous prime is 83990339. The next prime is 83990381. The reversal of 83990343 is 34309938.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 83990343 - 2² = 83990339 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 (83990303) 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, 13998388 + ... + 13998393.

It is an arithmetic number, because the mean of its divisors is an integer number (27996782).

Almost surely, 2^83990343 is an apocalyptic number.

83990343 is a deficient number, since it is larger than the sum of its proper divisors (27996785).

83990343 is a wasteful number, since it uses less digits than its factorization.

83990343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27996784.

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

The square root of 83990343 is about 9164.6245422276. The cubic root of 83990343 is about 437.9351304026.

The spelling of 83990343 in words is "eighty-three million, nine hundred ninety thousand, three hundred forty-three".