43431393604 has 27 divisors (see below), whose sum is σ = 77037611007. Its totient is φ = 21424559208.

The previous prime is 43431393601. The next prime is 43431393617. The reversal of 43431393604 is 40639313434.

The square root of 43431393604 is 208402.

It is a perfect power (a square), and thus also a powerful number.

It is not an unprimeable number, because it can be changed into a prime (43431393601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 32926857 + ... + 32928175.

Almost surely, 2^43431393604 is an apocalyptic number.

43431393604 is the 208402-nd square number.

It is an amenable number.

43431393604 is a deficient number, since it is larger than the sum of its proper divisors (33606217403).

43431393604 is an frugal number, since it uses more digits than its factorization.

43431393604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2800 (or 1400 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 40.

The spelling of 43431393604 in words is "forty-three billion, four hundred thirty-one million, three hundred ninety-three thousand, six hundred four".