43470881 has 2 divisors, whose sum is σ = 43470882. Its totient is φ = 43470880.

The previous prime is 43470877. The next prime is 43470907. The reversal of 43470881 is 18807434.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38254225 + 5216656 = 6185^2 + 2284^2 .

It is a cyclic number.

It is not a de Polignac number, because 43470881 - 2² = 43470877 is a prime.

It is a super-2 number, since 2×43470881² = 3779434989832322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (43470821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21735440 + 21735441.

It is an arithmetic number, because the mean of its divisors is an integer number (21735441).

Almost surely, 2^43470881 is an apocalyptic number.

It is an amenable number.

43470881 is a deficient number, since it is larger than the sum of its proper divisors (1).

43470881 is an equidigital number, since it uses as much as digits as its factorization.

43470881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 43470881 is about 6593.2451038923. The cubic root of 43470881 is about 351.6139906975.

The spelling of 43470881 in words is "forty-three million, four hundred seventy thousand, eight hundred eighty-one".