82390947 has 8 divisors (see below), whose sum is σ = 109912656. Its totient is φ = 54898272.

The previous prime is 82390933. The next prime is 82390951. The reversal of 82390947 is 74909328.

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

It is not a de Polignac number, because 82390947 - 2¹⁴ = 82374563 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 82390899 and 82390908.

It is not an unprimeable number, because it can be changed into a prime (82390907) 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, 573 + ... + 12849.

It is an arithmetic number, because the mean of its divisors is an integer number (13739082).

Almost surely, 2^82390947 is an apocalyptic number.

82390947 is a deficient number, since it is larger than the sum of its proper divisors (27521709).

82390947 is a wasteful number, since it uses less digits than its factorization.

82390947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14517.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 82390947 is about 9076.9459070769. The cubic root of 82390947 is about 435.1374859379.

The spelling of 82390947 in words is "eighty-two million, three hundred ninety thousand, nine hundred forty-seven".