43399793973904 has 45 divisors (see below), whose sum is σ = 84967919326857. Its totient is φ = 21474921841152.

The previous prime is 43399793973901. The next prime is 43399793973919. The reversal of 43399793973904 is 40937939799334.

The square root of 43399793973904 is 6587852.

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

43399793973904 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 19488163411600 + 23911630562304 = 4414540^2 + 4889952^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43399793973901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2556078087 + ... + 2556095065.

Almost surely, 2^{43399793973904} is an apocalyptic number.

43399793973904 is the 6587852-nd square number.

It is an amenable number.

43399793973904 is a deficient number, since it is larger than the sum of its proper divisors (41568125352953).

43399793973904 is an frugal number, since it uses more digits than its factorization.

43399793973904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34160 (or 17078 counting only the distinct ones).

The product of its (nonzero) digits is 3749847696, while the sum is 79.

The spelling of 43399793973904 in words is "forty-three trillion, three hundred ninety-nine billion, seven hundred ninety-three million, nine hundred seventy-three thousand, nine hundred four".