909389161 has 2 divisors, whose sum is σ = 909389162. Its totient is φ = 909389160.

The previous prime is 909389137. The next prime is 909389171. The reversal of 909389161 is 161983909.

909389161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 830534761 + 78854400 = 28819^2 + 8880^2 .

It is a cyclic number.

It is not a de Polignac number, because 909389161 - 2²³ = 901000553 is a prime.

It is a super-2 number, since 2×909389161² = 1653977292288567842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (909389171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 454694580 + 454694581.

It is an arithmetic number, because the mean of its divisors is an integer number (454694581).

Almost surely, 2^909389161 is an apocalyptic number.

It is an amenable number.

909389161 is a deficient number, since it is larger than the sum of its proper divisors (1).

909389161 is an equidigital number, since it uses as much as digits as its factorization.

909389161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104976, while the sum is 46.

The square root of 909389161 is about 30156.0800005571. The cubic root of 909389161 is about 968.8352338686.

The spelling of 909389161 in words is "nine hundred nine million, three hundred eighty-nine thousand, one hundred sixty-one".