449078641 has 4 divisors (see below), whose sum is σ = 489903984. Its totient is φ = 408253300.

The previous prime is 449078629. The next prime is 449078671. The reversal of 449078641 is 146870944.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-449078641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (449078671) 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, 20412655 + ... + 20412676.

It is an arithmetic number, because the mean of its divisors is an integer number (122475996).

Almost surely, 2^449078641 is an apocalyptic number.

It is an amenable number.

449078641 is a deficient number, since it is larger than the sum of its proper divisors (40825343).

449078641 is a wasteful number, since it uses less digits than its factorization.

449078641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40825342.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 449078641 is about 21191.4756682964. The cubic root of 449078641 is about 765.7860779422.

The spelling of 449078641 in words is "four hundred forty-nine million, seventy-eight thousand, six hundred forty-one".