43786989946 has 16 divisors (see below), whose sum is σ = 75089938176. Its totient is φ = 18759221136.

The previous prime is 43786989929. The next prime is 43786989959. The reversal of 43786989946 is 64998968734.

43786989946 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×43786989946² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 511506 + ... + 590941.

It is an arithmetic number, because the mean of its divisors is an integer number (4693121136).

Almost surely, 2^43786989946 is an apocalyptic number.

43786989946 is a deficient number, since it is larger than the sum of its proper divisors (31302948230).

43786989946 is a wasteful number, since it uses less digits than its factorization.

43786989946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105293.

The product of its digits is 564350976, while the sum is 73.

The spelling of 43786989946 in words is "forty-three billion, seven hundred eighty-six million, nine hundred eighty-nine thousand, nine hundred forty-six".