449964691 has 4 divisors (see below), whose sum is σ = 490870584. Its totient is φ = 409058800.

The previous prime is 449964677. The next prime is 449964703. The reversal of 449964691 is 196469944.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-449964691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (449964611) 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, 20452930 + ... + 20452951.

It is an arithmetic number, because the mean of its divisors is an integer number (122717646).

Almost surely, 2^449964691 is an apocalyptic number.

449964691 is a deficient number, since it is larger than the sum of its proper divisors (40905893).

449964691 is a wasteful number, since it uses less digits than its factorization.

449964691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40905892.

The product of its digits is 1679616, while the sum is 52.

The square root of 449964691 is about 21212.3711781592. The cubic root of 449964691 is about 766.2893891880.

The spelling of 449964691 in words is "four hundred forty-nine million, nine hundred sixty-four thousand, six hundred ninety-one".