3918873 has 24 divisors (see below), whose sum is σ = 6205248. Its totient is φ = 2192736.

The previous prime is 3918869. The next prime is 3918881. The reversal of 3918873 is 3788193.

It is not a de Polignac number, because 3918873 - 2² = 3918869 is a prime.

It is an Ulam number.

3918873 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3918853) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7540 + ... + 8042.

It is an arithmetic number, because the mean of its divisors is an integer number (258552).

Almost surely, 2^3918873 is an apocalyptic number.

It is an amenable number.

3918873 is a deficient number, since it is larger than the sum of its proper divisors (2286375).

3918873 is a wasteful number, since it uses less digits than its factorization.

3918873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573 (or 566 counting only the distinct ones).

The product of its digits is 36288, while the sum is 39.

The square root of 3918873 is about 1979.6143563836. The cubic root of 3918873 is about 157.6595913214.

The spelling of 3918873 in words is "three million, nine hundred eighteen thousand, eight hundred seventy-three".