449739972 has 48 divisors (see below), whose sum is σ = 1271995200. Its totient is φ = 136284480.

The previous prime is 449739943. The next prime is 449739973. The reversal of 449739972 is 279937944.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (449739973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188097 + ... + 190472.

It is an arithmetic number, because the mean of its divisors is an integer number (26499900).

Almost surely, 2^449739972 is an apocalyptic number.

It is an amenable number.

449739972 is an abundant number, since it is smaller than the sum of its proper divisors (822255228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

449739972 is a wasteful number, since it uses less digits than its factorization.

449739972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378593 (or 378585 counting only the distinct ones).

The product of its digits is 3429216, while the sum is 54.

The square root of 449739972 is about 21207.0736312203. The cubic root of 449739972 is about 766.1618025403.

It can be divided in two parts, 44973 and 9972, that added together give a palindrome (54945).

The spelling of 449739972 in words is "four hundred forty-nine million, seven hundred thirty-nine thousand, nine hundred seventy-two".