4399552409 has 8 divisors (see below), whose sum is σ = 5035238208. Its totient is φ = 3765661200.

The previous prime is 4399552363. The next prime is 4399552411. The reversal of 4399552409 is 9042559934.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4399552409 - 2¹⁶ = 4399486873 is a prime.

It is a super-2 number, since 2×4399552409² = 38712122799075406562, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4399552499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 443387 + ... + 453200.

It is an arithmetic number, because the mean of its divisors is an integer number (629404776).

Almost surely, 2^4399552409 is an apocalyptic number.

It is an amenable number.

4399552409 is a deficient number, since it is larger than the sum of its proper divisors (635685799).

4399552409 is an equidigital number, since it uses as much as digits as its factorization.

4399552409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897295.

The product of its (nonzero) digits is 1749600, while the sum is 50.

The square root of 4399552409 is about 66329.1218771966. The cubic root of 4399552409 is about 1638.5869755555.

The spelling of 4399552409 in words is "four billion, three hundred ninety-nine million, five hundred fifty-two thousand, four hundred nine".