489820155 has 32 divisors (see below), whose sum is σ = 858359808. Its totient is φ = 236544000.

The previous prime is 489820151. The next prime is 489820157. The reversal of 489820155 is 551028984.

It is a happy number.

It is not a de Polignac number, because 489820155 - 2² = 489820151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (489820151) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36630 + ... + 48180.

It is an arithmetic number, because the mean of its divisors is an integer number (26823744).

Almost surely, 2^489820155 is an apocalyptic number.

489820155 is a deficient number, since it is larger than the sum of its proper divisors (368539653).

489820155 is a wasteful number, since it uses less digits than its factorization.

489820155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11827.

The product of its (nonzero) digits is 115200, while the sum is 42.

The square root of 489820155 is about 22131.8809638946. The cubic root of 489820155 is about 788.2770521030.

The spelling of 489820155 in words is "four hundred eighty-nine million, eight hundred twenty thousand, one hundred fifty-five".