472449409 has 2 divisors, whose sum is σ = 472449410. Its totient is φ = 472449408.

The previous prime is 472449389. The next prime is 472449427. The reversal of 472449409 is 904944274.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 447449409 + 25000000 = 21153^2 + 5000^2 .

It is a cyclic number.

It is not a de Polignac number, because 472449409 - 2⁵ = 472449377 is a prime.

It is not a weakly prime, because it can be changed into another prime (472449449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 236224704 + 236224705.

It is an arithmetic number, because the mean of its divisors is an integer number (236224705).

Almost surely, 2^472449409 is an apocalyptic number.

It is an amenable number.

472449409 is a deficient number, since it is larger than the sum of its proper divisors (1).

472449409 is an equidigital number, since it uses as much as digits as its factorization.

472449409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 43.

The square root of 472449409 is about 21735.9013845757. The cubic root of 472449409 is about 778.8463160348.

The spelling of 472449409 in words is "four hundred seventy-two million, four hundred forty-nine thousand, four hundred nine".