449392861 has 4 divisors (see below), whose sum is σ = 461538652. Its totient is φ = 437247072.

The previous prime is 449392849. The next prime is 449392873. The reversal of 449392861 is 168293944.

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

It is an interprime number because it is at equal distance from previous prime (449392849) and next prime (449392873).

It can be written as a sum of positive squares in 2 ways, for example, as 407272761 + 42120100 = 20181^2 + 6490^2 .

It is a cyclic number.

It is not a de Polignac number, because 449392861 - 2⁵ = 449392829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449392261) 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, 6072840 + ... + 6072913.

It is an arithmetic number, because the mean of its divisors is an integer number (115384663).

Almost surely, 2^449392861 is an apocalyptic number.

It is an amenable number.

449392861 is a deficient number, since it is larger than the sum of its proper divisors (12145791).

449392861 is a wasteful number, since it uses less digits than its factorization.

449392861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12145790.

The product of its digits is 373248, while the sum is 46.

The square root of 449392861 is about 21198.8882019789. Note that the first 3 decimals coincide. The cubic root of 449392861 is about 765.9646429562.

The spelling of 449392861 in words is "four hundred forty-nine million, three hundred ninety-two thousand, eight hundred sixty-one".