43939641 has 8 divisors (see below), whose sum is σ = 58974784. Its totient is φ = 29098800.

The previous prime is 43939633. The next prime is 43939661. The reversal of 43939641 is 14693934.

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

It is not a de Polignac number, because 43939641 - 2³ = 43939633 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43939641.

It is not an unprimeable number, because it can be changed into a prime (43939661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48046 + ... + 48951.

It is an arithmetic number, because the mean of its divisors is an integer number (7371848).

Almost surely, 2^43939641 is an apocalyptic number.

It is an amenable number.

43939641 is a deficient number, since it is larger than the sum of its proper divisors (15035143).

43939641 is a wasteful number, since it uses less digits than its factorization.

43939641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97151.

The product of its digits is 69984, while the sum is 39.

The square root of 43939641 is about 6628.6982885028. The cubic root of 43939641 is about 352.8733291331.

The spelling of 43939641 in words is "forty-three million, nine hundred thirty-nine thousand, six hundred forty-one".