43980725429 has 4 divisors (see below), whose sum is σ = 43981490976. Its totient is φ = 43979959884.

The previous prime is 43980725423. The next prime is 43980725447. The reversal of 43980725429 is 92452708934.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 43980725429 - 2¹⁶ = 43980659893 is a prime.

It is a super-2 number, since 2×43980725429² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43980725423) 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, 288929 + ... + 414054.

It is an arithmetic number, because the mean of its divisors is an integer number (10995372744).

Almost surely, 2^43980725429 is an apocalyptic number.

It is an amenable number.

43980725429 is a deficient number, since it is larger than the sum of its proper divisors (765547).

43980725429 is an equidigital number, since it uses as much as digits as its factorization.

43980725429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765546.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 43980725429 in words is "forty-three billion, nine hundred eighty million, seven hundred twenty-five thousand, four hundred twenty-nine".