3491997 has 8 divisors (see below), whose sum is σ = 4664640. Its totient is φ = 2323680.

The previous prime is 3491981. The next prime is 3492001. The reversal of 3491997 is 7991943.

3491997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 3491997 - 2⁴ = 3491981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3491927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2529 + ... + 3657.

It is an arithmetic number, because the mean of its divisors is an integer number (583080).

Almost surely, 2^3491997 is an apocalyptic number.

It is an amenable number.

3491997 is a deficient number, since it is larger than the sum of its proper divisors (1172643).

3491997 is a wasteful number, since it uses less digits than its factorization.

3491997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2163.

The product of its digits is 61236, while the sum is 42.

The square root of 3491997 is about 1868.6885775859. The cubic root of 3491997 is about 151.7136373189.

It can be divided in two parts, 349 and 1997, that added together give a triangular number (2346 = T₆₈).

The spelling of 3491997 in words is "three million, four hundred ninety-one thousand, nine hundred ninety-seven".