472445689 has 2 divisors, whose sum is σ = 472445690. Its totient is φ = 472445688.

The previous prime is 472445681. The next prime is 472445693. The reversal of 472445689 is 986544274.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 331240000 + 141205689 = 18200^2 + 11883^2 .

It is a cyclic number.

It is not a de Polignac number, because 472445689 - 2³ = 472445681 is a prime.

It is not a weakly prime, because it can be changed into another prime (472445681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 236222844 + 236222845.

It is an arithmetic number, because the mean of its divisors is an integer number (236222845).

Almost surely, 2^472445689 is an apocalyptic number.

It is an amenable number.

472445689 is a deficient number, since it is larger than the sum of its proper divisors (1).

472445689 is an equidigital number, since it uses as much as digits as its factorization.

472445689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1935360, while the sum is 49.

The square root of 472445689 is about 21735.8158116966. The cubic root of 472445689 is about 778.8442718541.

The spelling of 472445689 in words is "four hundred seventy-two million, four hundred forty-five thousand, six hundred eighty-nine".