489902769 has 32 divisors (see below), whose sum is σ = 745113600. Its totient is φ = 318018960.

The previous prime is 489902747. The next prime is 489902807. The reversal of 489902769 is 967209984.

489902769 is a `hidden beast` number, since 489 + 90 + 2 + 76 + 9 = 666.

It is not a de Polignac number, because 489902769 - 2⁸ = 489902513 is a prime.

It is a super-2 number, since 2×489902769² = 480009446147734722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (489902729) 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, 157572 + ... + 160650.

It is an arithmetic number, because the mean of its divisors is an integer number (23284800).

Almost surely, 2^489902769 is an apocalyptic number.

It is an amenable number.

489902769 is a deficient number, since it is larger than the sum of its proper divisors (255210831).

489902769 is a wasteful number, since it uses less digits than its factorization.

489902769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3242 (or 3236 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The square root of 489902769 is about 22133.7472877956. The cubic root of 489902769 is about 788.3213670479.

The spelling of 489902769 in words is "four hundred eighty-nine million, nine hundred two thousand, seven hundred sixty-nine".