83478047 has 8 divisors (see below), whose sum is σ = 85379712. Its totient is φ = 81595800.

The previous prime is 83478029. The next prime is 83478049. The reversal of 83478047 is 74087438.

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

It is a cyclic number.

It is not a de Polignac number, because 83478047 - 2⁸ = 83477791 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83477995 and 83478013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83478049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4022 + ... + 13532.

It is an arithmetic number, because the mean of its divisors is an integer number (10672464).

Almost surely, 2^83478047 is an apocalyptic number.

83478047 is a deficient number, since it is larger than the sum of its proper divisors (1901665).

83478047 is a wasteful number, since it uses less digits than its factorization.

83478047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9709.

The product of its (nonzero) digits is 150528, while the sum is 41.

The square root of 83478047 is about 9136.6321475695. The cubic root of 83478047 is about 437.0429242171.

The spelling of 83478047 in words is "eighty-three million, four hundred seventy-eight thousand, forty-seven".