449690919 has 8 divisors (see below), whose sum is σ = 634857840. Its totient is φ = 282158976.

The previous prime is 449690909. The next prime is 449690921. The reversal of 449690919 is 919096944.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 449690919 - 2⁴ = 449690903 is a prime.

It is a super-2 number, since 2×449690919² = 404443845262129122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51), and also a Moran number because the ratio is a prime number: 8817469 = 449690919 / (4 + 4 + 9 + 6 + 9 + 0 + 9 + 1 + 9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449690909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4408684 + ... + 4408785.

It is an arithmetic number, because the mean of its divisors is an integer number (79357230).

Almost surely, 2^449690919 is an apocalyptic number.

449690919 is a deficient number, since it is larger than the sum of its proper divisors (185166921).

449690919 is a wasteful number, since it uses less digits than its factorization.

449690919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8817489.

The product of its (nonzero) digits is 629856, while the sum is 51.

The square root of 449690919 is about 21205.9170751939. The cubic root of 449690919 is about 766.1339465170.

The spelling of 449690919 in words is "four hundred forty-nine million, six hundred ninety thousand, nine hundred nineteen".