43394305969 has 9 divisors (see below), whose sum is σ = 50480786937. Its totient is φ = 37193869524.

The previous prime is 43394305957. The next prime is 43394305973. The reversal of 43394305969 is 96950349334.

The square root of 43394305969 is 208313.

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

It is not a de Polignac number, because 43394305969 - 2⁹ = 43394305457 is a prime.

It is a super-2 number, since 2×43394305969² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (43394305909) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1443312 + ... + 1473070.

Almost surely, 2^43394305969 is an apocalyptic number.

43394305969 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

43394305969 is the 208313-rd square number.

43394305969 is the 104157-th centered octagonal number.

It is an amenable number.

43394305969 is a deficient number, since it is larger than the sum of its proper divisors (7086480968).

43394305969 is an frugal number, since it uses more digits than its factorization.

43394305969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59532 (or 29766 counting only the distinct ones).

The product of its (nonzero) digits is 9447840, while the sum is 55.

The spelling of 43394305969 in words is "forty-three billion, three hundred ninety-four million, three hundred five thousand, nine hundred sixty-nine".