4448587858649 has 4 divisors (see below), whose sum is σ = 4853004936720. Its totient is φ = 4044170780580.

The previous prime is 4448587858609. The next prime is 4448587858697. The reversal of 4448587858649 is 9468587858444.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4448587858649 - 2³⁶ = 4379868381913 is a prime.

It is a super-2 number, since 2×4448587858649² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4448587858609) 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, 202208539019 + ... + 202208539040.

It is an arithmetic number, because the mean of its divisors is an integer number (1213251234180).

Almost surely, 2^{4448587858649} is an apocalyptic number.

It is an amenable number.

4448587858649 is a deficient number, since it is larger than the sum of its proper divisors (404417078071).

4448587858649 is a wasteful number, since it uses less digits than its factorization.

4448587858649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404417078070.

The product of its digits is 9909043200, while the sum is 80.

The spelling of 4448587858649 in words is "four trillion, four hundred forty-eight billion, five hundred eighty-seven million, eight hundred fifty-eight thousand, six hundred forty-nine".