3891293 has 8 divisors (see below), whose sum is σ = 4514112. Its totient is φ = 3285216.

The previous prime is 3891287. The next prime is 3891323. The reversal of 3891293 is 3921983.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3891293 - 2⁶ = 3891229 is a prime.

It is a super-2 number, since 2×3891293² = 30284322423698, 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 (3891203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3680 + ... + 4617.

It is an arithmetic number, because the mean of its divisors is an integer number (564264).

Almost surely, 2^3891293 is an apocalyptic number.

It is an amenable number.

3891293 is a deficient number, since it is larger than the sum of its proper divisors (622819).

3891293 is an equidigital number, since it uses as much as digits as its factorization.

3891293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8371.

The product of its digits is 11664, while the sum is 35.

The square root of 3891293 is about 1972.6360536095. The cubic root of 3891293 is about 157.2888646510.

The spelling of 3891293 in words is "three million, eight hundred ninety-one thousand, two hundred ninety-three".