83220479 has 4 divisors (see below), whose sum is σ = 83771760. Its totient is φ = 82669200.

The previous prime is 83220451. The next prime is 83220493. The reversal of 83220479 is 97402238.

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

It is a cyclic number.

It is not a de Polignac number, because 83220479 - 2⁸ = 83220223 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 (83220079) 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, 275414 + ... + 275715.

It is an arithmetic number, because the mean of its divisors is an integer number (20942940).

Almost surely, 2^83220479 is an apocalyptic number.

83220479 is a deficient number, since it is larger than the sum of its proper divisors (551281).

83220479 is a wasteful number, since it uses less digits than its factorization.

83220479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551280.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 83220479 is about 9122.5259111718. The cubic root of 83220479 is about 436.5929686111.

The spelling of 83220479 in words is "eighty-three million, two hundred twenty thousand, four hundred seventy-nine".