489490155 has 192 divisors, whose sum is σ = 1143936000. Its totient is φ = 196862400.

The previous prime is 489490153. The next prime is 489490171. The reversal of 489490155 is 551094984.

489490155 is a `hidden beast` number, since 4 + 8 + 9 + 490 + 155 = 666.

It is not a de Polignac number, because 489490155 - 2¹ = 489490153 is a prime.

It is a super-2 number, since 2×489490155² = 479201223683848050, which contains 22 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 489490155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489490151) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 15789990 + ... + 15790020.

It is an arithmetic number, because the mean of its divisors is an integer number (5958000).

Almost surely, 2^489490155 is an apocalyptic number.

489490155 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

489490155 is an abundant number, since it is smaller than the sum of its proper divisors (654445845).

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

489490155 is a wasteful number, since it uses less digits than its factorization.

489490155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108 (or 57 counting only the distinct ones).

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

The square root of 489490155 is about 22124.4243992923. The cubic root of 489490155 is about 788.0999872050.

The spelling of 489490155 in words is "four hundred eighty-nine million, four hundred ninety thousand, one hundred fifty-five".