3491893 has 4 divisors (see below), whose sum is σ = 3534048. Its totient is φ = 3449740.

The previous prime is 3491881. The next prime is 3491897. The reversal of 3491893 is 3981943.

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 a de Polignac number, because none of the positive numbers 2^k-3491893 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 (3491897) 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, 20953 + ... + 21118.

It is an arithmetic number, because the mean of its divisors is an integer number (883512).

Almost surely, 2^3491893 is an apocalyptic number.

It is an amenable number.

3491893 is a deficient number, since it is larger than the sum of its proper divisors (42155).

3491893 is an equidigital number, since it uses as much as digits as its factorization.

3491893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42154.

The product of its digits is 23328, while the sum is 37.

The square root of 3491893 is about 1868.6607503771. The cubic root of 3491893 is about 151.7121311726.

The spelling of 3491893 in words is "three million, four hundred ninety-one thousand, eight hundred ninety-three".