83478319 has 4 divisors (see below), whose sum is σ = 86171200. Its totient is φ = 80785440.

The previous prime is 83478289. The next prime is 83478323. The reversal of 83478319 is 91387438.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91387438 = 2 ⋅45693719.

It is a cyclic number.

It is not a de Polignac number, because 83478319 - 2⁵ = 83478287 is a prime.

It is a super-2 number, since 2×83478319² = 13937259486131522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83478119) 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 3 ways as a sum of consecutive naturals, for example, 1346394 + ... + 1346455.

It is an arithmetic number, because the mean of its divisors is an integer number (21542800).

Almost surely, 2^83478319 is an apocalyptic number.

83478319 is a deficient number, since it is larger than the sum of its proper divisors (2692881).

83478319 is a wasteful number, since it uses less digits than its factorization.

83478319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2692880.

The product of its digits is 145152, while the sum is 43.

The square root of 83478319 is about 9136.6470326920. The cubic root of 83478319 is about 437.0433988949.

The spelling of 83478319 in words is "eighty-three million, four hundred seventy-eight thousand, three hundred nineteen".