505096789 has 4 divisors (see below), whose sum is σ = 508314124. Its totient is φ = 501879456.

The previous prime is 505096763. The next prime is 505096819. The reversal of 505096789 is 987690505.

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 325080900 + 180015889 = 18030^2 + 13417^2 .

It is a cyclic number.

It is not a de Polignac number, because 505096789 - 2¹¹ = 505094741 is a prime.

It is a super-2 number, since 2×505096789² = 510245532516221042, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505096729) 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, 1608432 + ... + 1608745.

It is an arithmetic number, because the mean of its divisors is an integer number (127078531).

Almost surely, 2^505096789 is an apocalyptic number.

It is an amenable number.

505096789 is a deficient number, since it is larger than the sum of its proper divisors (3217335).

505096789 is a wasteful number, since it uses less digits than its factorization.

505096789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3217334.

The product of its (nonzero) digits is 680400, while the sum is 49.

The square root of 505096789 is about 22474.3584780523. The cubic root of 505096789 is about 796.3882966405.

The spelling of 505096789 in words is "five hundred five million, ninety-six thousand, seven hundred eighty-nine".