449129071 has 4 divisors (see below), whose sum is σ = 451409112. Its totient is φ = 446849032.

The previous prime is 449129053. The next prime is 449129111. The reversal of 449129071 is 170921944.

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 449129071 - 2¹¹ = 449127023 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 449129071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449129371) 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, 1139725 + ... + 1140118.

It is an arithmetic number, because the mean of its divisors is an integer number (112852278).

Almost surely, 2^449129071 is an apocalyptic number.

449129071 is a deficient number, since it is larger than the sum of its proper divisors (2280041).

449129071 is a wasteful number, since it uses less digits than its factorization.

449129071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2280040.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 449129071 is about 21192.6655001206. The cubic root of 449129071 is about 765.8147419244.

The spelling of 449129071 in words is "four hundred forty-nine million, one hundred twenty-nine thousand, seventy-one".