245489769 has 24 divisors (see below), whose sum is σ = 405804672. Its totient is φ = 140088960.

The previous prime is 245489767. The next prime is 245489807. The reversal of 245489769 is 967984542.

245489769 is a `hidden beast` number, since 2 + 4 + 548 + 97 + 6 + 9 = 666.

It is not a de Polignac number, because 245489769 - 2¹ = 245489767 is a prime.

It is a super-2 number, since 2×245489769² = 120530453367346722, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (245489767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53292 + ... + 57714.

It is an arithmetic number, because the mean of its divisors is an integer number (16908528).

Almost surely, 2^245489769 is an apocalyptic number.

It is an amenable number.

245489769 is a deficient number, since it is larger than the sum of its proper divisors (160314903).

245489769 is a wasteful number, since it uses less digits than its factorization.

245489769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5317 (or 5314 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The square root of 245489769 is about 15668.1131282615. The cubic root of 245489769 is about 626.1491553588.

The spelling of 245489769 in words is "two hundred forty-five million, four hundred eighty-nine thousand, seven hundred sixty-nine".