3918923 has 2 divisors, whose sum is σ = 3918924. Its totient is φ = 3918922.

The previous prime is 3918919. The next prime is 3918949. The reversal of 3918923 is 3298193.

It is a weak prime.

It is an emirp because it is prime and its reverse (3298193) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3918923 - 2² = 3918919 is a prime.

It is not a weakly prime, because it can be changed into another prime (3918913) 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 as a sum of consecutive naturals, namely, 1959461 + 1959462.

It is an arithmetic number, because the mean of its divisors is an integer number (1959462).

Almost surely, 2^3918923 is an apocalyptic number.

3918923 is a deficient number, since it is larger than the sum of its proper divisors (1).

3918923 is an equidigital number, since it uses as much as digits as its factorization.

3918923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 35.

The square root of 3918923 is about 1979.6269850656. The cubic root of 3918923 is about 157.6602618327.

The spelling of 3918923 in words is "three million, nine hundred eighteen thousand, nine hundred twenty-three".