43891942 has 8 divisors (see below), whose sum is σ = 66232656. Its totient is φ = 21814392.

The previous prime is 43891931. The next prime is 43891951. The reversal of 43891942 is 24919834.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 43891895 and 43891904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65373 + ... + 66040.

It is an arithmetic number, because the mean of its divisors is an integer number (8279082).

Almost surely, 2^43891942 is an apocalyptic number.

43891942 is a deficient number, since it is larger than the sum of its proper divisors (22340714).

43891942 is a wasteful number, since it uses less digits than its factorization.

43891942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131582.

The product of its digits is 62208, while the sum is 40.

The square root of 43891942 is about 6625.0993954808. The cubic root of 43891942 is about 352.7455948229.

The spelling of 43891942 in words is "forty-three million, eight hundred ninety-one thousand, nine hundred forty-two".