3943418 has 4 divisors (see below), whose sum is σ = 5915130. Its totient is φ = 1971708.

The previous prime is 3943409. The next prime is 3943427. The reversal of 3943418 is 8143493.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8143493 = 17 ⋅479029.

It is an interprime number because it is at equal distance from previous prime (3943409) and next prime (3943427).

It can be written as a sum of positive squares in only one way, i.e., 3829849 + 113569 = 1957^2 + 337^2 .

It is a zygodrome in base 4.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 985853 + ... + 985856.

Almost surely, 2^3943418 is an apocalyptic number.

3943418 is a deficient number, since it is larger than the sum of its proper divisors (1971712).

3943418 is a wasteful number, since it uses less digits than its factorization.

3943418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1971711.

The product of its digits is 10368, while the sum is 32.

The square root of 3943418 is about 1985.8041192424. The cubic root of 3943418 is about 157.9880619085.

The spelling of 3943418 in words is "three million, nine hundred forty-three thousand, four hundred eighteen".