431969426 has 16 divisors (see below), whose sum is σ = 752660160. Its totient is φ = 182094480.

The previous prime is 431969401. The next prime is 431969429. The reversal of 431969426 is 624969134.

It is a happy number.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (431969429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 252056 + ... + 253763.

It is an arithmetic number, because the mean of its divisors is an integer number (47041260).

Almost surely, 2^431969426 is an apocalyptic number.

431969426 is a deficient number, since it is larger than the sum of its proper divisors (320690734).

431969426 is a wasteful number, since it uses less digits than its factorization.

431969426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505889.

The product of its digits is 279936, while the sum is 44.

The square root of 431969426 is about 20783.8741816823. The cubic root of 431969426 is about 755.9347958004.

The spelling of 431969426 in words is "four hundred thirty-one million, nine hundred sixty-nine thousand, four hundred twenty-six".