43479857 has 2 divisors, whose sum is σ = 43479858. Its totient is φ = 43479856.

The previous prime is 43479833. The next prime is 43479869. The reversal of 43479857 is 75897434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42042256 + 1437601 = 6484^2 + 1199^2 .

It is a cyclic number.

It is not a de Polignac number, because 43479857 - 2¹⁴ = 43463473 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (43479257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21739928 + 21739929.

It is an arithmetic number, because the mean of its divisors is an integer number (21739929).

Almost surely, 2^43479857 is an apocalyptic number.

It is an amenable number.

43479857 is a deficient number, since it is larger than the sum of its proper divisors (1).

43479857 is an equidigital number, since it uses as much as digits as its factorization.

43479857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 47.

The square root of 43479857 is about 6593.9257654299. The cubic root of 43479857 is about 351.6381898082.

The spelling of 43479857 in words is "forty-three million, four hundred seventy-nine thousand, eight hundred fifty-seven".