3491397 has 64 divisors (see below), whose sum is σ = 6720000. Its totient is φ = 1778112.

The previous prime is 3491363. The next prime is 3491401. The reversal of 3491397 is 7931943.

It is not a de Polignac number, because 3491397 - 2⁶ = 3491333 is a prime.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3491317) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 120379 + ... + 120407.

It is an arithmetic number, because the mean of its divisors is an integer number (105000).

Almost surely, 2^3491397 is an apocalyptic number.

It is an amenable number.

3491397 is a deficient number, since it is larger than the sum of its proper divisors (3228603).

3491397 is a wasteful number, since it uses less digits than its factorization.

3491397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72 (or 52 counting only the distinct ones).

The product of its digits is 20412, while the sum is 36.

The square root of 3491397 is about 1868.5280302955. The cubic root of 3491397 is about 151.7049476020.

The spelling of 3491397 in words is "three million, four hundred ninety-one thousand, three hundred ninety-seven".