7930905 has 16 divisors (see below), whose sum is σ = 12804480. Its totient is φ = 4191488.

The previous prime is 7930903. The next prime is 7930907. The reversal of 7930905 is 5090397.

It is an interprime number because it is at equal distance from previous prime (7930903) and next prime (7930907).

It is a cyclic number.

It is not a de Polignac number, because 7930905 - 2¹ = 7930903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7930903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 645 + ... + 4034.

It is an arithmetic number, because the mean of its divisors is an integer number (800280).

Almost surely, 2^7930905 is an apocalyptic number.

It is an amenable number.

7930905 is a deficient number, since it is larger than the sum of its proper divisors (4873575).

7930905 is a wasteful number, since it uses less digits than its factorization.

7930905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4800.

The product of its (nonzero) digits is 8505, while the sum is 33.

The square root of 7930905 is about 2816.1862509429. The cubic root of 7930905 is about 199.4225426530.

The spelling of 7930905 in words is "seven million, nine hundred thirty thousand, nine hundred five".