3493891 has 16 divisors (see below), whose sum is σ = 4039200. Its totient is φ = 2999808.

The previous prime is 3493883. The next prime is 3493909. The reversal of 3493891 is 1983943.

3493891 = 333² + 334² + ... + 361².

It is a cyclic number.

It is not a de Polignac number, because 3493891 - 2³ = 3493883 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3493891.

It is not an unprimeable number, because it can be changed into a prime (3493811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9181 + ... + 9553.

It is an arithmetic number, because the mean of its divisors is an integer number (252450).

Almost surely, 2^3493891 is an apocalyptic number.

3493891 is a deficient number, since it is larger than the sum of its proper divisors (545309).

3493891 is a wasteful number, since it uses less digits than its factorization.

3493891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438.

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

The square root of 3493891 is about 1869.1952813979. The cubic root of 3493891 is about 151.7410613301.

The spelling of 3493891 in words is "three million, four hundred ninety-three thousand, eight hundred ninety-one".