4472921 has 8 divisors (see below), whose sum is σ = 4782240. Its totient is φ = 4168768.

The previous prime is 4472917. The next prime is 4472927. The reversal of 4472921 is 1292744.

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 4472921 - 2² = 4472917 is a prime.

It is a d-powerful number, because it can be written as 4⁷ + 4⁹ + 7 + 2²¹ + 9² + 2²¹ + 1 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4472927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 590 + ... + 3048.

It is an arithmetic number, because the mean of its divisors is an integer number (597780).

Almost surely, 2^4472921 is an apocalyptic number.

It is an amenable number.

4472921 is a deficient number, since it is larger than the sum of its proper divisors (309319).

4472921 is a wasteful number, since it uses less digits than its factorization.

4472921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2583.

The product of its digits is 4032, while the sum is 29.

The square root of 4472921 is about 2114.9281311666. The cubic root of 4472921 is about 164.7645371152.

The spelling of 4472921 in words is "four million, four hundred seventy-two thousand, nine hundred twenty-one".