83990306 has 8 divisors (see below), whose sum is σ = 126158160. Its totient is φ = 41937588.

The previous prime is 83990303. The next prime is 83990321. The reversal of 83990306 is 60309938.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 83990306.

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, 26936 + ... + 29891.

It is an arithmetic number, because the mean of its divisors is an integer number (15769770).

Almost surely, 2^83990306 is an apocalyptic number.

83990306 is a deficient number, since it is larger than the sum of its proper divisors (42167854).

83990306 is a wasteful number, since it uses less digits than its factorization.

83990306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57568.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 83990306 is about 9164.6225235958. The cubic root of 83990306 is about 437.9350660952.

The spelling of 83990306 in words is "eighty-three million, nine hundred ninety thousand, three hundred six".