44043409 has 2 divisors, whose sum is σ = 44043410. Its totient is φ = 44043408.

The previous prime is 44043407. The next prime is 44043421. The reversal of 44043409 is 90434044.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40602384 + 3441025 = 6372^2 + 1855^2 .

It is a cyclic number.

It is not a de Polignac number, because 44043409 - 2¹ = 44043407 is a prime.

Together with 44043407, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (44043407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22021704 + 22021705.

It is an arithmetic number, because the mean of its divisors is an integer number (22021705).

Almost surely, 2^44043409 is an apocalyptic number.

It is an amenable number.

44043409 is a deficient number, since it is larger than the sum of its proper divisors (1).

44043409 is an equidigital number, since it uses as much as digits as its factorization.

44043409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 44043409 is about 6636.5208505662. The cubic root of 44043409 is about 353.1508930187.

The spelling of 44043409 in words is "forty-four million, forty-three thousand, four hundred nine".