7911923 has 4 divisors (see below), whose sum is σ = 8328360. Its totient is φ = 7495488.

The previous prime is 7911907. The next prime is 7911971. The reversal of 7911923 is 3291197.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7911923 - 2⁴ = 7911907 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7911923.

It is not an unprimeable number, because it can be changed into a prime (7911523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208190 + ... + 208227.

It is an arithmetic number, because the mean of its divisors is an integer number (2082090).

Almost surely, 2^7911923 is an apocalyptic number.

7911923 is a deficient number, since it is larger than the sum of its proper divisors (416437).

7911923 is a wasteful number, since it uses less digits than its factorization.

7911923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416436.

The product of its digits is 3402, while the sum is 32.

The square root of 7911923 is about 2812.8140713527. The cubic root of 7911923 is about 199.2633148063.

The spelling of 7911923 in words is "seven million, nine hundred eleven thousand, nine hundred twenty-three".