3943493 has 4 divisors (see below), whose sum is σ = 3973728. Its totient is φ = 3913260.

The previous prime is 3943481. The next prime is 3943517.

3943493 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3943493 - 2¹⁰ = 3942469 is a prime.

It is a super-2 number, since 2×3943493² = 31102274082098, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3943403) 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, 14921 + ... + 15182.

It is an arithmetic number, because the mean of its divisors is an integer number (993432).

Almost surely, 2^3943493 is an apocalyptic number.

It is an amenable number.

3943493 is a deficient number, since it is larger than the sum of its proper divisors (30235).

3943493 is a wasteful number, since it uses less digits than its factorization.

3943493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30234.

The product of its digits is 34992, while the sum is 35.

The square root of 3943493 is about 1985.8230031904. The cubic root of 3943493 is about 157.9890634955.

The spelling of 3943493 in words is "three million, nine hundred forty-three thousand, four hundred ninety-three".