3918427 has 4 divisors (see below), whose sum is σ = 4124680. Its totient is φ = 3712176.

The previous prime is 3918413. The next prime is 3918443. The reversal of 3918427 is 7248193.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3918427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3918392 and 3918401.

It is not an unprimeable number, because it can be changed into a prime (3918127) 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, 103098 + ... + 103135.

It is an arithmetic number, because the mean of its divisors is an integer number (1031170).

Almost surely, 2^3918427 is an apocalyptic number.

3918427 is a deficient number, since it is larger than the sum of its proper divisors (206253).

3918427 is a wasteful number, since it uses less digits than its factorization.

3918427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206252.

The product of its digits is 12096, while the sum is 34.

The square root of 3918427 is about 1979.5017049753. The cubic root of 3918427 is about 157.6536101081.

The spelling of 3918427 in words is "three million, nine hundred eighteen thousand, four hundred twenty-seven".