43950681 has 14 divisors (see below), whose sum is σ = 65896970. Its totient is φ = 29299968.

The previous prime is 43950649. The next prime is 43950691. The reversal of 43950681 is 18605934.

43950681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 23619600 + 20331081 = 4860^2 + 4509^2 .

It is not a de Polignac number, because 43950681 - 2⁵ = 43950649 is a prime.

It is a super-2 number, since 2×43950681² = 3863324720727522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43950691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 29416 + ... + 30873.

Almost surely, 2^43950681 is an apocalyptic number.

It is an amenable number.

43950681 is a deficient number, since it is larger than the sum of its proper divisors (21946289).

43950681 is an frugal number, since it uses more digits than its factorization.

43950681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60307 (or 60292 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 43950681 is about 6629.5309788853. The cubic root of 43950681 is about 352.9028802418.

The spelling of 43950681 in words is "forty-three million, nine hundred fifty thousand, six hundred eighty-one".