90777489 has 16 divisors (see below), whose sum is σ = 133256640. Its totient is φ = 54509760.

The previous prime is 90777469. The next prime is 90777493. The reversal of 90777489 is 98477709.

It is not a de Polignac number, because 90777489 - 2⁹ = 90776977 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (90777469) 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 15 ways as a sum of consecutive naturals, for example, 9022 + ... + 16215.

It is an arithmetic number, because the mean of its divisors is an integer number (8328540).

Almost surely, 2^90777489 is an apocalyptic number.

It is an amenable number.

90777489 is a deficient number, since it is larger than the sum of its proper divisors (42479151).

90777489 is a wasteful number, since it uses less digits than its factorization.

90777489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25360.

The product of its (nonzero) digits is 889056, while the sum is 51.

The square root of 90777489 is about 9527.7221307089. The cubic root of 90777489 is about 449.4272367241.

The spelling of 90777489 in words is "ninety million, seven hundred seventy-seven thousand, four hundred eighty-nine".