3931493 has 4 divisors (see below), whose sum is σ = 3990240. Its totient is φ = 3872748.

The previous prime is 3931481. The next prime is 3931517. The reversal of 3931493 is 3941393.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3941393 = 61 ⋅64613.

It is a cyclic number.

It is not a de Polignac number, because 3931493 - 2¹⁶ = 3865957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3931463) 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, 29273 + ... + 29406.

It is an arithmetic number, because the mean of its divisors is an integer number (997560).

Almost surely, 2^3931493 is an apocalyptic number.

It is an amenable number.

3931493 is a deficient number, since it is larger than the sum of its proper divisors (58747).

3931493 is an equidigital number, since it uses as much as digits as its factorization.

3931493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58746.

The product of its digits is 8748, while the sum is 32.

The square root of 3931493 is about 1982.7992838409. The cubic root of 3931493 is about 157.8286477546.

The spelling of 3931493 in words is "three million, nine hundred thirty-one thousand, four hundred ninety-three".