43894449 has 6 divisors (see below), whose sum is σ = 63403106. Its totient is φ = 29262960.

The previous prime is 43894423. The next prime is 43894463. The reversal of 43894449 is 94449834.

It can be written as a sum of positive squares in only one way, i.e., 38750625 + 5143824 = 6225^2 + 2268^2 .

It is not a de Polignac number, because 43894449 - 2¹⁵ = 43861681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43894349) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2438572 + ... + 2438589.

Almost surely, 2^43894449 is an apocalyptic number.

It is an amenable number.

43894449 is a deficient number, since it is larger than the sum of its proper divisors (19508657).

43894449 is a wasteful number, since it uses less digits than its factorization.

43894449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4877167 (or 4877164 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 43894449 is about 6625.2885974877. The cubic root of 43894449 is about 352.7523106826.

The spelling of 43894449 in words is "forty-three million, eight hundred ninety-four thousand, four hundred forty-nine".