43499047 has 2 divisors, whose sum is σ = 43499048. Its totient is φ = 43499046.

The previous prime is 43499041. The next prime is 43499051. The reversal of 43499047 is 74099434.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43499047 - 2¹⁵ = 43466279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43499041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21749523 + 21749524.

It is an arithmetic number, because the mean of its divisors is an integer number (21749524).

Almost surely, 2^43499047 is an apocalyptic number.

43499047 is a deficient number, since it is larger than the sum of its proper divisors (1).

43499047 is an equidigital number, since it uses as much as digits as its factorization.

43499047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 43499047 is about 6595.3807319972. The cubic root of 43499047 is about 351.6899144828.

The spelling of 43499047 in words is "forty-three million, four hundred ninety-nine thousand, forty-seven".