7919938 has 16 divisors (see below), whose sum is σ = 12841920. Its totient is φ = 3641616.

The previous prime is 7919921. The next prime is 7919939. The reversal of 7919938 is 8399197.

It is not an unprimeable number, because it can be changed into a prime (7919939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10531 + ... + 11257.

It is an arithmetic number, because the mean of its divisors is an integer number (802620).

Almost surely, 2^7919938 is an apocalyptic number.

7919938 is a deficient number, since it is larger than the sum of its proper divisors (4921982).

7919938 is a wasteful number, since it uses less digits than its factorization.

7919938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1161.

The product of its digits is 122472, while the sum is 46.

The square root of 7919938 is about 2814.2384405022. The cubic root of 7919938 is about 199.3305785411.

The spelling of 7919938 in words is "seven million, nine hundred nineteen thousand, nine hundred thirty-eight".