449689870 has 16 divisors (see below), whose sum is σ = 925076448. Its totient is φ = 154179360.

The previous prime is 449689861. The next prime is 449689873. The reversal of 449689870 is 78986944.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449689873) 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, 3212001 + ... + 3212140.

It is an arithmetic number, because the mean of its divisors is an integer number (57817278).

Almost surely, 2^449689870 is an apocalyptic number.

449689870 is an abundant number, since it is smaller than the sum of its proper divisors (475386578).

449689870 is a wasteful number, since it uses less digits than its factorization.

449689870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6424155.

The product of its (nonzero) digits is 3483648, while the sum is 55.

The square root of 449689870 is about 21205.8923415168. The cubic root of 449689870 is about 766.1333507929.

The spelling of 449689870 in words is "four hundred forty-nine million, six hundred eighty-nine thousand, eight hundred seventy".