3497991 has 8 divisors (see below), whose sum is σ = 5330304. Its totient is φ = 1998840.

The previous prime is 3497987. The next prime is 3497993. The reversal of 3497991 is 1997943.

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

It is not a de Polignac number, because 3497991 - 2² = 3497987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3497993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83265 + ... + 83306.

It is an arithmetic number, because the mean of its divisors is an integer number (666288).

Almost surely, 2^3497991 is an apocalyptic number.

3497991 is a deficient number, since it is larger than the sum of its proper divisors (1832313).

3497991 is a wasteful number, since it uses less digits than its factorization.

3497991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166581.

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

The square root of 3497991 is about 1870.2916884807. The cubic root of 3497991 is about 151.8003929993.

The spelling of 3497991 in words is "three million, four hundred ninety-seven thousand, nine hundred ninety-one".