2905533409 has 9 divisors (see below), whose sum is σ = 3067586067. Its totient is φ = 2751640344.

The previous prime is 2905533391. The next prime is 2905533413. The reversal of 2905533409 is 9043355092.

The square root of 2905533409 is 53903.

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., 99500625 + 2806032784 = 9975^2 + 52972^2 .

It is not a de Polignac number, because 2905533409 - 2⁵ = 2905533377 is a prime.

It is a super-2 number, since 2×2905533409² = 16884248781630322562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2905533419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1022739 + ... + 1025575.

Almost surely, 2^2905533409 is an apocalyptic number.

2905533409 is the 53903-rd square number.

2905533409 is the 26952-nd centered octagonal number.

It is an amenable number.

2905533409 is a deficient number, since it is larger than the sum of its proper divisors (162052658).

2905533409 is an frugal number, since it uses more digits than its factorization.

2905533409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5712 (or 2856 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 40.

The cubic root of 2905533409 is about 1426.9495685802.

The spelling of 2905533409 in words is "two billion, nine hundred five million, five hundred thirty-three thousand, four hundred nine".