43879855 has 4 divisors (see below), whose sum is σ = 52655832. Its totient is φ = 35103880.

The previous prime is 43879853. The next prime is 43879861. The reversal of 43879855 is 55897834.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 43879855 - 2¹ = 43879853 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43879799 and 43879808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43879853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4387981 + ... + 4387990.

It is an arithmetic number, because the mean of its divisors is an integer number (13163958).

Almost surely, 2^43879855 is an apocalyptic number.

43879855 is a deficient number, since it is larger than the sum of its proper divisors (8775977).

43879855 is an equidigital number, since it uses as much as digits as its factorization.

43879855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8775976.

The product of its digits is 1209600, while the sum is 49.

The square root of 43879855 is about 6624.1871199416. The cubic root of 43879855 is about 352.7132120571.

The spelling of 43879855 in words is "forty-three million, eight hundred seventy-nine thousand, eight hundred fifty-five".