3547971 has 24 divisors (see below), whose sum is σ = 5907200. Its totient is φ = 2010096.

The previous prime is 3547963. The next prime is 3547991. The reversal of 3547971 is 1797453.

It is a happy number.

It is not a de Polignac number, because 3547971 - 2³ = 3547963 is a prime.

It is a Duffinian number.

3547971 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3547931) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12396 + ... + 12678.

Almost surely, 2^3547971 is an apocalyptic number.

3547971 is a deficient number, since it is larger than the sum of its proper divisors (2359229).

3547971 is a wasteful number, since it uses less digits than its factorization.

3547971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495 (or 492 counting only the distinct ones).

The product of its digits is 26460, while the sum is 36.

The square root of 3547971 is about 1883.6058504900. The cubic root of 3547971 is about 152.5199615543.

The spelling of 3547971 in words is "three million, five hundred forty-seven thousand, nine hundred seventy-one".