4439206139 has 4 divisors (see below), whose sum is σ = 4500017256. Its totient is φ = 4378395024.

The previous prime is 4439206129. The next prime is 4439206183. The reversal of 4439206139 is 9316029344.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4439206139 - 2¹² = 4439202043 is a prime.

It is a super-2 number, since 2×4439206139² = 39413102289070574642, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4439206096 and 4439206105.

It is not an unprimeable number, because it can be changed into a prime (4439206129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30405449 + ... + 30405594.

It is an arithmetic number, because the mean of its divisors is an integer number (1125004314).

Almost surely, 2^4439206139 is an apocalyptic number.

4439206139 is a deficient number, since it is larger than the sum of its proper divisors (60811117).

4439206139 is an equidigital number, since it uses as much as digits as its factorization.

4439206139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60811116.

The product of its (nonzero) digits is 139968, while the sum is 41.

The square root of 4439206139 is about 66627.3677928222. The cubic root of 4439206139 is about 1643.4951903421.

The spelling of 4439206139 in words is "four billion, four hundred thirty-nine million, two hundred six thousand, one hundred thirty-nine".