772495989 has 16 divisors (see below), whose sum is σ = 1056287232. Its totient is φ = 501904368.

The previous prime is 772495981. The next prime is 772495993. The reversal of 772495989 is 989594277.

It is not a de Polignac number, because 772495989 - 2³ = 772495981 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (772495981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53832 + ... + 66654.

It is an arithmetic number, because the mean of its divisors is an integer number (66017952).

Almost surely, 2^772495989 is an apocalyptic number.

It is an amenable number.

772495989 is a deficient number, since it is larger than the sum of its proper divisors (283791243).

772495989 is a wasteful number, since it uses less digits than its factorization.

772495989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13336.

The product of its digits is 11430720, while the sum is 60.

The square root of 772495989 is about 27793.8120631194. The cubic root of 772495989 is about 917.5549399250.

It can be divided in two parts, 77249 and 5989, that added together give a palindrome (83238).

The spelling of 772495989 in words is "seven hundred seventy-two million, four hundred ninety-five thousand, nine hundred eighty-nine".