2997891009 has 9 divisors (see below), whose sum is σ = 4330524289. Its totient is φ = 1998484500.

The previous prime is 2997890969. The next prime is 2997891019. The reversal of 2997891009 is 9001987992.

The square root of 2997891009 is 54753.

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

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 2997891009 - 2⁷ = 2997890881 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2997891019) 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, 155134 + ... + 173384.

Almost surely, 2^2997891009 is an apocalyptic number.

2997891009 is the 54753-rd square number.

2997891009 is the 27377-th centered octagonal number.

It is an amenable number.

2997891009 is a deficient number, since it is larger than the sum of its proper divisors (1332633280).

2997891009 is an frugal number, since it uses more digits than its factorization.

2997891009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36508 (or 18254 counting only the distinct ones).

The product of its (nonzero) digits is 734832, while the sum is 54.

The cubic root of 2997891009 is about 1441.9115253731.

The spelling of 2997891009 in words is "two billion, nine hundred ninety-seven million, eight hundred ninety-one thousand, nine".