449386689 has 16 divisors (see below), whose sum is σ = 631353600. Its totient is φ = 283537296.

The previous prime is 449386607. The next prime is 449386733. The reversal of 449386689 is 986683944.

It is not a de Polignac number, because 449386689 - 2²¹ = 447289537 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (449388689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62902 + ... + 69680.

It is an arithmetic number, because the mean of its divisors is an integer number (39459600).

Almost surely, 2^449386689 is an apocalyptic number.

It is an amenable number.

449386689 is a deficient number, since it is larger than the sum of its proper divisors (181966911).

449386689 is a wasteful number, since it uses less digits than its factorization.

449386689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7964.

The product of its digits is 8957952, while the sum is 57.

The square root of 449386689 is about 21198.7426278070. The cubic root of 449386689 is about 765.9611363322.

The spelling of 449386689 in words is "four hundred forty-nine million, three hundred eighty-six thousand, six hundred eighty-nine".