43053979 has 4 divisors (see below), whose sum is σ = 45586584. Its totient is φ = 40521376.

The previous prime is 43053961. The next prime is 43054001. The reversal of 43053979 is 97935034.

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

It is a cyclic number.

It is not a de Polignac number, because 43053979 - 2⁹ = 43053467 is a prime.

It is a Smith number, since the sum of its digits (40) 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 not an unprimeable number, because it can be changed into a prime (43053919) 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, 1266277 + ... + 1266310.

It is an arithmetic number, because the mean of its divisors is an integer number (11396646).

Almost surely, 2^43053979 is an apocalyptic number.

43053979 is a deficient number, since it is larger than the sum of its proper divisors (2532605).

43053979 is a wasteful number, since it uses less digits than its factorization.

43053979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2532604.

The product of its (nonzero) digits is 102060, while the sum is 40.

The square root of 43053979 is about 6561.5530935900. The cubic root of 43053979 is about 350.4863415794.

The spelling of 43053979 in words is "forty-three million, fifty-three thousand, nine hundred seventy-nine".