4447779001 has 2 divisors, whose sum is σ = 4447779002. Its totient is φ = 4447779000.

The previous prime is 4447778999. The next prime is 4447779013. The reversal of 4447779001 is 1009777444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4428769401 + 19009600 = 66549^2 + 4360^2 .

It is a cyclic number.

It is not a de Polignac number, because 4447779001 - 2¹ = 4447778999 is a prime.

Together with 4447778999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4447779701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2223889500 + 2223889501.

It is an arithmetic number, because the mean of its divisors is an integer number (2223889501).

Almost surely, 2^4447779001 is an apocalyptic number.

It is an amenable number.

4447779001 is a deficient number, since it is larger than the sum of its proper divisors (1).

4447779001 is an equidigital number, since it uses as much as digits as its factorization.

4447779001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 197568, while the sum is 43.

The square root of 4447779001 is about 66691.6711516513. The cubic root of 4447779001 is about 1644.5524662775.

The spelling of 4447779001 in words is "four billion, four hundred forty-seven million, seven hundred seventy-nine thousand, one".