449387979 has 16 divisors (see below), whose sum is σ = 642079872. Its totient is φ = 278569088.

The previous prime is 449387963. The next prime is 449387987. The reversal of 449387979 is 979783944.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 449387979 - 2⁴ = 449387963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (449387959) 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, 48849 + ... + 57314.

It is an arithmetic number, because the mean of its divisors is an integer number (40129992).

Almost surely, 2^449387979 is an apocalyptic number.

449387979 is a deficient number, since it is larger than the sum of its proper divisors (192691893).

449387979 is a wasteful number, since it uses less digits than its factorization.

449387979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106266.

The product of its digits is 13716864, while the sum is 60.

The square root of 449387979 is about 21198.7730541180. The cubic root of 449387979 is about 765.9618692488.

The spelling of 449387979 in words is "four hundred forty-nine million, three hundred eighty-seven thousand, nine hundred seventy-nine".