775099989 has 32 divisors (see below), whose sum is σ = 1217773440. Its totient is φ = 485565696.

The previous prime is 775099987. The next prime is 775099991. The reversal of 775099989 is 989990577.

775099989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (775099987) and next prime (775099991).

It is not a de Polignac number, because 775099989 - 2¹ = 775099987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (775099987) 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, 464134 + ... + 465800.

It is an arithmetic number, because the mean of its divisors is an integer number (38055420).

Almost surely, 2^775099989 is an apocalyptic number.

It is an amenable number.

775099989 is a deficient number, since it is larger than the sum of its proper divisors (442673451).

775099989 is a wasteful number, since it uses less digits than its factorization.

775099989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2706 (or 2700 counting only the distinct ones).

The product of its (nonzero) digits is 12859560, while the sum is 63.

The square root of 775099989 is about 27840.6176116838. The cubic root of 775099989 is about 918.5847762862.

The spelling of 775099989 in words is "seven hundred seventy-five million, ninety-nine thousand, nine hundred eighty-nine".