82947477 has 8 divisors (see below), whose sum is σ = 110649664. Its totient is φ = 55271808.

The previous prime is 82947463. The next prime is 82947493. The reversal of 82947477 is 77474928.

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

It is not a de Polignac number, because 82947477 - 2¹⁰ = 82946453 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 (82947427) 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, 2448 + ... + 13110.

It is an arithmetic number, because the mean of its divisors is an integer number (13831208).

Almost surely, 2^82947477 is an apocalyptic number.

It is an amenable number.

82947477 is a deficient number, since it is larger than the sum of its proper divisors (27702187).

82947477 is a wasteful number, since it uses less digits than its factorization.

82947477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13259.

The product of its digits is 790272, while the sum is 48.

The square root of 82947477 is about 9107.5505488578. The cubic root of 82947477 is about 436.1150360683.

The spelling of 82947477 in words is "eighty-two million, nine hundred forty-seven thousand, four hundred seventy-seven".