3721447 has 8 divisors (see below), whose sum is σ = 3845520. Its totient is φ = 3599040.

The previous prime is 3721439. The next prime is 3721451. The reversal of 3721447 is 7441273.

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 3721447 - 2³ = 3721439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3721477) 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, 5373 + ... + 6025.

It is an arithmetic number, because the mean of its divisors is an integer number (480690).

Almost surely, 2^3721447 is an apocalyptic number.

3721447 is a deficient number, since it is larger than the sum of its proper divisors (124073).

3721447 is a wasteful number, since it uses less digits than its factorization.

3721447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833.

The product of its digits is 4704, while the sum is 28.

The square root of 3721447 is about 1929.1052330031. The cubic root of 3721447 is about 154.9663055444.

The spelling of 3721447 in words is "three million, seven hundred twenty-one thousand, four hundred forty-seven".