3918867 has 4 divisors (see below), whose sum is σ = 5225160. Its totient is φ = 2612576.

The previous prime is 3918853. The next prime is 3918869. The reversal of 3918867 is 7688193.

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 3918867 - 2⁴ = 3918851 is a prime.

It is a D-number.

3918867 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3918869) 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, 653142 + ... + 653147.

It is an arithmetic number, because the mean of its divisors is an integer number (1306290).

Almost surely, 2^3918867 is an apocalyptic number.

3918867 is a deficient number, since it is larger than the sum of its proper divisors (1306293).

3918867 is a wasteful number, since it uses less digits than its factorization.

3918867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306292.

The product of its digits is 72576, while the sum is 42.

The square root of 3918867 is about 1979.6128409363. The cubic root of 3918867 is about 157.6595108596.

The spelling of 3918867 in words is "three million, nine hundred eighteen thousand, eight hundred sixty-seven".