43949117 has 2 divisors, whose sum is σ = 43949118. Its totient is φ = 43949116.

The previous prime is 43949107. The next prime is 43949207. The reversal of 43949117 is 71194934.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43943641 + 5476 = 6629^2 + 74^2 .

It is a cyclic number.

It is not a de Polignac number, because 43949117 - 2¹² = 43945021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43949107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21974558 + 21974559.

It is an arithmetic number, because the mean of its divisors is an integer number (21974559).

Almost surely, 2^43949117 is an apocalyptic number.

It is an amenable number.

43949117 is a deficient number, since it is larger than the sum of its proper divisors (1).

43949117 is an equidigital number, since it uses as much as digits as its factorization.

43949117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 38.

The square root of 43949117 is about 6629.4130207734. The cubic root of 43949117 is about 352.8986941357.

The spelling of 43949117 in words is "forty-three million, nine hundred forty-nine thousand, one hundred seventeen".