449751920 has 20 divisors (see below), whose sum is σ = 1045673400. Its totient is φ = 179900736.

The previous prime is 449751901. The next prime is 449751943. The reversal of 449751920 is 29157944.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2810870 + ... + 2811029.

It is an arithmetic number, because the mean of its divisors is an integer number (52283670).

Almost surely, 2^449751920 is an apocalyptic number.

449751920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

449751920 is an abundant number, since it is smaller than the sum of its proper divisors (595921480).

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

449751920 is a wasteful number, since it uses less digits than its factorization.

449751920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5621912 (or 5621906 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 449751920 is about 21207.3553278102. The cubic root of 449751920 is about 766.1685872164.

The spelling of 449751920 in words is "four hundred forty-nine million, seven hundred fifty-one thousand, nine hundred twenty".