43262752009 has 3 divisors (see below), whose sum is σ = 43262960007. Its totient is φ = 43262544012.

The previous prime is 43262751977. The next prime is 43262752019. The reversal of 43262752009 is 90025726234.

The square root of 43262752009 is 207997.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 5148780025 + 38113971984 = 71755^2 + 195228^2 .

It is not a de Polignac number, because 43262752009 - 2⁵ = 43262751977 is a prime.

It is a super-2 number, since 2×43262752009² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43262752019) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 103999 + ... + 311995.

It is an arithmetic number, because the mean of its divisors is an integer number (14420986669).

Almost surely, 2^43262752009 is an apocalyptic number.

43262752009 is the 207997-th square number.

43262752009 is the 103999-th centered octagonal number.

It is an amenable number.

43262752009 is a deficient number, since it is larger than the sum of its proper divisors (207998).

43262752009 is an frugal number, since it uses more digits than its factorization.

43262752009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415994 (or 207997 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 40.

The spelling of 43262752009 in words is "forty-three billion, two hundred sixty-two million, seven hundred fifty-two thousand, nine".