7982905 has 16 divisors (see below), whose sum is σ = 11217024. Its totient is φ = 5339520.

The previous prime is 7982899. The next prime is 7982927. The reversal of 7982905 is 5092897.

It is a de Polignac number, because none of the positive numbers 2^k-7982905 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1347 + ... + 4216.

It is an arithmetic number, because the mean of its divisors is an integer number (701064).

Almost surely, 2^7982905 is an apocalyptic number.

It is an amenable number.

7982905 is a deficient number, since it is larger than the sum of its proper divisors (3234119).

7982905 is a wasteful number, since it uses less digits than its factorization.

7982905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5616.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 7982905 is about 2825.4035110051. The cubic root of 7982905 is about 199.8574400741.

The spelling of 7982905 in words is "seven million, nine hundred eighty-two thousand, nine hundred five".