431665448 has 16 divisors (see below), whose sum is σ = 814053780. Its totient is φ = 214584448.

The previous prime is 431665447. The next prime is 431665453. The reversal of 431665448 is 844566134.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 430894564 + 770884 = 20758^2 + 878^2 .

It is not an unprimeable number, because it can be changed into a prime (431665447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154565 + ... + 157332.

Almost surely, 2^431665448 is an apocalyptic number.

It is an amenable number.

431665448 is a deficient number, since it is larger than the sum of its proper divisors (382388332).

431665448 is a wasteful number, since it uses less digits than its factorization.

431665448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312076 (or 312072 counting only the distinct ones).

The product of its digits is 276480, while the sum is 41.

The square root of 431665448 is about 20776.5600617619. The cubic root of 431665448 is about 755.7574364355.

The spelling of 431665448 in words is "four hundred thirty-one million, six hundred sixty-five thousand, four hundred forty-eight".