472921 has 2 divisors, whose sum is σ = 472922. Its totient is φ = 472920.

The previous prime is 472909. The next prime is 472937. The reversal of 472921 is 129274.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 403225 + 69696 = 635^2 + 264^2 .

It is a cyclic number.

It is not a de Polignac number, because 472921 - 2⁷ = 472793 is a prime.

It is an alternating number because its digits alternate between even and odd.

472921 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (472421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 236460 + 236461.

It is an arithmetic number, because the mean of its divisors is an integer number (236461).

2⁴⁷²⁹²¹ is an apocalyptic number.

It is an amenable number.

472921 is a deficient number, since it is larger than the sum of its proper divisors (1).

472921 is an equidigital number, since it uses as much as digits as its factorization.

472921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 25.

The square root of 472921 is about 687.6925184994. The cubic root of 472921 is about 77.9105373593.

The spelling of 472921 in words is "four hundred seventy-two thousand, nine hundred twenty-one".