7964891 has 16 divisors (see below), whose sum is σ = 9289728. Its totient is φ = 6748800.

The previous prime is 7964881. The next prime is 7964897. The reversal of 7964891 is 1984697.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7964891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7964897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35606 + ... + 35828.

It is an arithmetic number, because the mean of its divisors is an integer number (580608).

Almost surely, 2^7964891 is an apocalyptic number.

7964891 is a deficient number, since it is larger than the sum of its proper divisors (1324837).

7964891 is a wasteful number, since it uses less digits than its factorization.

7964891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442.

The product of its digits is 108864, while the sum is 44.

The square root of 7964891 is about 2822.2138473192. The cubic root of 7964891 is about 199.7069959528.

The spelling of 7964891 in words is "seven million, nine hundred sixty-four thousand, eight hundred ninety-one".