43949449 has 2 divisors, whose sum is σ = 43949450. Its totient is φ = 43949448.

The previous prime is 43949419. The next prime is 43949459. The reversal of 43949449 is 94494934.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43033600 + 915849 = 6560^2 + 957^2 .

It is a cyclic number.

It is not a de Polignac number, because 43949449 - 2¹³ = 43941257 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43949399 and 43949408.

It is not a weakly prime, because it can be changed into another prime (43949419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21974724 + 21974725.

It is an arithmetic number, because the mean of its divisors is an integer number (21974725).

Almost surely, 2^43949449 is an apocalyptic number.

It is an amenable number.

43949449 is a deficient number, since it is larger than the sum of its proper divisors (1).

43949449 is an equidigital number, since it uses as much as digits as its factorization.

43949449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 559872, while the sum is 46.

The square root of 43949449 is about 6629.4380606504. The cubic root of 43949449 is about 352.8995827547.

The spelling of 43949449 in words is "forty-three million, nine hundred forty-nine thousand, four hundred forty-nine".