43400404771 has 4 divisors (see below), whose sum is σ = 43401029200. Its totient is φ = 43399780344.

The previous prime is 43400404757. The next prime is 43400404787. The reversal of 43400404771 is 17740400434.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 43400404771 - 2¹¹ = 43400402723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43400404171) 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, 192711 + ... + 352048.

It is an arithmetic number, because the mean of its divisors is an integer number (10850257300).

Almost surely, 2^43400404771 is an apocalyptic number.

43400404771 is a deficient number, since it is larger than the sum of its proper divisors (624429).

43400404771 is an equidigital number, since it uses as much as digits as its factorization.

43400404771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624428.

The product of its (nonzero) digits is 37632, while the sum is 34.

The spelling of 43400404771 in words is "forty-three billion, four hundred million, four hundred four thousand, seven hundred seventy-one".