449966939 has 4 divisors (see below), whose sum is σ = 450119880. Its totient is φ = 449814000.

The previous prime is 449966903. The next prime is 449966941. The reversal of 449966939 is 939669944.

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

It is a cyclic number.

It is not a de Polignac number, because 449966939 - 2²⁰ = 448918363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (449966989) 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, 71969 + ... + 77970.

It is an arithmetic number, because the mean of its divisors is an integer number (112529970).

Almost surely, 2^449966939 is an apocalyptic number.

449966939 is a deficient number, since it is larger than the sum of its proper divisors (152941).

449966939 is a wasteful number, since it uses less digits than its factorization.

449966939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152940.

The product of its digits is 11337408, while the sum is 59.

The square root of 449966939 is about 21212.4241660401. The cubic root of 449966939 is about 766.2906652998.

The spelling of 449966939 in words is "four hundred forty-nine million, nine hundred sixty-six thousand, nine hundred thirty-nine".