43249147 has 2 divisors, whose sum is σ = 43249148. Its totient is φ = 43249146.

The previous prime is 43249133. The next prime is 43249181. The reversal of 43249147 is 74194234.

It is a happy number.

It is an a-pointer prime, because the next prime (43249181) can be obtained adding 43249147 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43249147 is a prime.

It is not a weakly prime, because it can be changed into another prime (43249117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21624573 + 21624574.

It is an arithmetic number, because the mean of its divisors is an integer number (21624574).

Almost surely, 2^43249147 is an apocalyptic number.

43249147 is a deficient number, since it is larger than the sum of its proper divisors (1).

43249147 is an equidigital number, since it uses as much as digits as its factorization.

43249147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 34.

The square root of 43249147 is about 6576.4083662741. The cubic root of 43249147 is about 351.0151399167.

The spelling of 43249147 in words is "forty-three million, two hundred forty-nine thousand, one hundred forty-seven".