3493749 has 12 divisors (see below), whose sum is σ = 5419104. Its totient is φ = 1996344.

The previous prime is 3493747. The next prime is 3493753. The reversal of 3493749 is 9473943.

It is not a de Polignac number, because 3493749 - 2¹ = 3493747 is a prime.

It is a Curzon number.

3493749 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3493747) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11737 + ... + 12030.

It is an arithmetic number, because the mean of its divisors is an integer number (451592).

Almost surely, 2^3493749 is an apocalyptic number.

It is an amenable number.

3493749 is a deficient number, since it is larger than the sum of its proper divisors (1925355).

3493749 is a wasteful number, since it uses less digits than its factorization.

3493749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23784 (or 23777 counting only the distinct ones).

The product of its digits is 81648, while the sum is 39.

The square root of 3493749 is about 1869.1572967517. The cubic root of 3493749 is about 151.7390055969.

The spelling of 3493749 in words is "three million, four hundred ninety-three thousand, seven hundred forty-nine".