472309 has 2 divisors, whose sum is σ = 472310. Its totient is φ = 472308.

The previous prime is 472301. The next prime is 472319. The reversal of 472309 is 903274.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 448900 + 23409 = 670^2 + 153^2 .

It is a cyclic number.

It is not a de Polignac number, because 472309 - 2³ = 472301 is a prime.

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

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (472301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 236154 + 236155.

It is an arithmetic number, because the mean of its divisors is an integer number (236155).

2⁴⁷²³⁰⁹ is an apocalyptic number.

It is an amenable number.

472309 is a deficient number, since it is larger than the sum of its proper divisors (1).

472309 is an equidigital number, since it uses as much as digits as its factorization.

472309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 472309 is about 687.2474081435. The cubic root of 472309 is about 77.8769152311.

The spelling of 472309 in words is "four hundred seventy-two thousand, three hundred nine".