3712891 has 8 divisors (see below), whose sum is σ = 4569824. Its totient is φ = 2937600.

The previous prime is 3712889. The next prime is 3712897. The reversal of 3712891 is 1982173.

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

It is a cyclic number.

It is not a de Polignac number, because 3712891 - 2¹ = 3712889 is a prime.

3712891 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3712897) 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, 20310 + ... + 20491.

It is an arithmetic number, because the mean of its divisors is an integer number (571228).

Almost surely, 2^3712891 is an apocalyptic number.

3712891 is a deficient number, since it is larger than the sum of its proper divisors (856933).

3712891 is a wasteful number, since it uses less digits than its factorization.

3712891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40821.

The product of its digits is 3024, while the sum is 31.

The square root of 3712891 is about 1926.8863484907. The cubic root of 3712891 is about 154.8474531078.

The spelling of 3712891 in words is "three million, seven hundred twelve thousand, eight hundred ninety-one".