449980155 has 24 divisors (see below), whose sum is σ = 780640848. Its totient is φ = 239781696.

The previous prime is 449980127. The next prime is 449980163. The reversal of 449980155 is 551089944.

449980155 is a `hidden beast` number, since 4 + 499 + 8 + 0 + 155 = 666.

It is not a de Polignac number, because 449980155 - 2¹¹ = 449978107 is a prime.

It is a super-3 number, since 3×449980155³ (a number of 27 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

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

It is a self number, because there is not a number n which added to its sum of digits gives 449980155.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58144 + ... + 65426.

It is an arithmetic number, because the mean of its divisors is an integer number (32526702).

Almost surely, 2^449980155 is an apocalyptic number.

449980155 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

449980155 is a deficient number, since it is larger than the sum of its proper divisors (330660693).

449980155 is a wasteful number, since it uses less digits than its factorization.

449980155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8667 (or 8664 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The square root of 449980155 is about 21212.7356793036. The cubic root of 449980155 is about 766.2981674793.

The spelling of 449980155 in words is "four hundred forty-nine million, nine hundred eighty thousand, one hundred fifty-five".