7964138 has 16 divisors (see below), whose sum is σ = 14703360. Its totient is φ = 3150576.

The previous prime is 7964137. The next prime is 7964147. The reversal of 7964138 is 8314697.

It is not an unprimeable number, because it can be changed into a prime (7964137) 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 7 ways as a sum of consecutive naturals, for example, 21698 + ... + 22061.

It is an arithmetic number, because the mean of its divisors is an integer number (918960).

Almost surely, 2^7964138 is an apocalyptic number.

7964138 is a deficient number, since it is larger than the sum of its proper divisors (6739222).

7964138 is a wasteful number, since it uses less digits than its factorization.

7964138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43781.

The product of its digits is 36288, while the sum is 38.

The square root of 7964138 is about 2822.0804382583. The cubic root of 7964138 is about 199.7007023279.

The spelling of 7964138 in words is "seven million, nine hundred sixty-four thousand, one hundred thirty-eight".