4091777089 has 9 divisors (see below), whose sum is σ = 4183762531. Its totient is φ = 4001775520.

The previous prime is 4091777057. The next prime is 4091777111. The reversal of 4091777089 is 9807771904.

The square root of 4091777089 is 63967.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 695218689 + 3396558400 = 26367^2 + 58280^2 .

It is not a de Polignac number, because 4091777089 - 2⁵ = 4091777057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4001777089) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3005769 + ... + 3007129.

Almost surely, 2^4091777089 is an apocalyptic number.

4091777089 is the 63967-th square number.

4091777089 is the 31984-th centered octagonal number.

It is an amenable number.

4091777089 is a deficient number, since it is larger than the sum of its proper divisors (91985442).

4091777089 is an frugal number, since it uses more digits than its factorization.

4091777089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2816 (or 1408 counting only the distinct ones).

The product of its (nonzero) digits is 889056, while the sum is 52.

The cubic root of 4091777089 is about 1599.4499527235.

The spelling of 4091777089 in words is "four billion, ninety-one million, seven hundred seventy-seven thousand, eighty-nine".