83398478 has 4 divisors (see below), whose sum is σ = 125097720. Its totient is φ = 41699238.

The previous prime is 83398477. The next prime is 83398499. The reversal of 83398478 is 87489338.

It is a happy number.

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

It is a super-3 number, since 3×83398478³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83398477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20849618 + ... + 20849621.

It is an arithmetic number, because the mean of its divisors is an integer number (31274430).

Almost surely, 2^83398478 is an apocalyptic number.

83398478 is a deficient number, since it is larger than the sum of its proper divisors (41699242).

83398478 is a wasteful number, since it uses less digits than its factorization.

83398478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41699241.

The product of its digits is 1161216, while the sum is 50.

The square root of 83398478 is about 9132.2767150366. The cubic root of 83398478 is about 436.9040209388.

The spelling of 83398478 in words is "eighty-three million, three hundred ninety-eight thousand, four hundred seventy-eight".