449639460 has 72 divisors (see below), whose sum is σ = 1444145976. Its totient is φ = 112849920.

The previous prime is 449639453. The next prime is 449639507. The reversal of 449639460 is 64936944.

It is a happy number.

449639460 is a `hidden beast` number, since 4 + 4 + 9 + 639 + 4 + 6 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 73822464 + 375816996 = 8592^2 + 19386^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70411 + ... + 76530.

It is an arithmetic number, because the mean of its divisors is an integer number (20057583).

Almost surely, 2^449639460 is an apocalyptic number.

It is an amenable number.

449639460 is an abundant number, since it is smaller than the sum of its proper divisors (994506516).

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

449639460 is a wasteful number, since it uses less digits than its factorization.

449639460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146973 (or 146968 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The square root of 449639460 is about 21204.7037234666. The cubic root of 449639460 is about 766.1047220068.

It can be divided in two parts, 4496 and 39460, that added together give a triangular number (43956 = T₂₉₆).

The spelling of 449639460 in words is "four hundred forty-nine million, six hundred thirty-nine thousand, four hundred sixty".