6449929 has 4 divisors (see below), whose sum is σ = 6475284. Its totient is φ = 6424576.

The previous prime is 6449923. The next prime is 6450007. The reversal of 6449929 is 9299446.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4613904 + 1836025 = 2148^2 + 1355^2 .

It is a cyclic number.

It is not a de Polignac number, because 6449929 - 2³ = 6449921 is a prime.

It is a Duffinian number.

6449929 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6449921) 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, 12292 + ... + 12805.

It is an arithmetic number, because the mean of its divisors is an integer number (1618821).

Almost surely, 2^6449929 is an apocalyptic number.

It is an amenable number.

6449929 is a deficient number, since it is larger than the sum of its proper divisors (25355).

6449929 is a wasteful number, since it uses less digits than its factorization.

6449929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25354.

The product of its digits is 139968, while the sum is 43.

The square root of 6449929 is about 2539.6710416902. The cubic root of 6449929 is about 186.1451154883.

The spelling of 6449929 in words is "six million, four hundred forty-nine thousand, nine hundred twenty-nine".