489581377 has 4 divisors (see below), whose sum is σ = 489681540. Its totient is φ = 489481216.

The previous prime is 489581371. The next prime is 489581431. The reversal of 489581377 is 773185984.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 229855921 + 259725456 = 15161^2 + 16116^2 .

It is a cyclic number.

It is not a de Polignac number, because 489581377 - 2²⁷ = 355363649 is a prime.

It is a super-2 number, since 2×489581377² = 479379849410432258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (489581371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42352 + ... + 52657.

It is an arithmetic number, because the mean of its divisors is an integer number (122420385).

Almost surely, 2^489581377 is an apocalyptic number.

It is an amenable number.

489581377 is a deficient number, since it is larger than the sum of its proper divisors (100163).

489581377 is an equidigital number, since it uses as much as digits as its factorization.

489581377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100162.

The product of its digits is 1693440, while the sum is 52.

The square root of 489581377 is about 22126.4858710099. The cubic root of 489581377 is about 788.1489412652.

The spelling of 489581377 in words is "four hundred eighty-nine million, five hundred eighty-one thousand, three hundred seventy-seven".