449679 has 4 divisors (see below), whose sum is σ = 599576. Its totient is φ = 299784.

The previous prime is 449677. The next prime is 449681. The reversal of 449679 is 976944.

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 (449677) and next prime (449681).

It is not a de Polignac number, because 449679 - 2¹ = 449677 is a prime.

It is a super-2 number, since 2×449679² = 404422406082, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

449679 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449671) 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, 74944 + ... + 74949.

It is an arithmetic number, because the mean of its divisors is an integer number (149894).

2⁴⁴⁹⁶⁷⁹ is an apocalyptic number.

449679 is a deficient number, since it is larger than the sum of its proper divisors (149897).

449679 is a wasteful number, since it uses less digits than its factorization.

449679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149896.

The product of its digits is 54432, while the sum is 39.

The square root of 449679 is about 670.5810912932. The cubic root of 449679 is about 76.6127177697.

It can be divided in two parts, 449 and 679, that added together give a triangular number (1128 = T₄₇).

The spelling of 449679 in words is "four hundred forty-nine thousand, six hundred seventy-nine".