7940111 has 4 divisors (see below), whose sum is σ = 7945800. Its totient is φ = 7934424.

The previous prime is 7940087. The next prime is 7940147. The reversal of 7940111 is 1110497.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 7940111 - 2⁶ = 7940047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7940011) 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 3 ways as a sum of consecutive naturals, for example, 845 + ... + 4073.

It is an arithmetic number, because the mean of its divisors is an integer number (1986450).

Almost surely, 2^7940111 is an apocalyptic number.

7940111 is a deficient number, since it is larger than the sum of its proper divisors (5689).

7940111 is a wasteful number, since it uses less digits than its factorization.

7940111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5688.

The product of its (nonzero) digits is 252, while the sum is 23.

The square root of 7940111 is about 2817.8202568652. The cubic root of 7940111 is about 199.4996744152.

The spelling of 7940111 in words is "seven million, nine hundred forty thousand, one hundred eleven".