43729946 has 16 divisors (see below), whose sum is σ = 73713024. Its totient is φ = 19305264.

The previous prime is 43729927. The next prime is 43729949. The reversal of 43729946 is 64992734.

It is a junction number, because it is equal to n+sod(n) for n = 43729897 and 43729906.

It is not an unprimeable number, because it can be changed into a prime (43729949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35966 + ... + 37161.

It is an arithmetic number, because the mean of its divisors is an integer number (4607064).

Almost surely, 2^43729946 is an apocalyptic number.

43729946 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

43729946 is a deficient number, since it is larger than the sum of its proper divisors (29983078).

43729946 is a wasteful number, since it uses less digits than its factorization.

43729946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73165.

The product of its digits is 326592, while the sum is 44.

The square root of 43729946 is about 6612.8621639953. The cubic root of 43729946 is about 352.3110896974.

The spelling of 43729946 in words is "forty-three million, seven hundred twenty-nine thousand, nine hundred forty-six".