43880045 has 48 divisors (see below), whose sum is σ = 62339760. Its totient is φ = 29568000.

The previous prime is 43880041. The next prime is 43880051. The reversal of 43880045 is 54008834.

It can be written as a sum of positive squares in 8 ways, for example, as 15768841 + 28111204 = 3971^2 + 5302^2 .

It is not a de Polignac number, because 43880045 - 2² = 43880041 is a prime.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 43879993 and 43880020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43880041) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 719315 + ... + 719375.

It is an arithmetic number, because the mean of its divisors is an integer number (1298745).

Almost surely, 2^43880045 is an apocalyptic number.

It is an amenable number.

43880045 is a deficient number, since it is larger than the sum of its proper divisors (18459715).

43880045 is a wasteful number, since it uses less digits than its factorization.

43880045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 43880045 is about 6624.2014613084. The cubic root of 43880045 is about 352.7137211397.

Adding to 43880045 its reverse (54008834), we get a palindrome (97888879).

It can be divided in two parts, 43 and 880045, that added together give a palindrome (880088).

The spelling of 43880045 in words is "forty-three million, eight hundred eighty thousand, forty-five".