2969923009 has 3 divisors (see below), whose sum is σ = 2969977507. Its totient is φ = 2969868512.

The previous prime is 2969923007. The next prime is 2969923037. The reversal of 2969923009 is 9003299692.

The square root of 2969923009 is 54497.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 1080108225 + 1889814784 = 32865^2 + 43472^2 .

It is not a de Polignac number, because 2969923009 - 2¹ = 2969923007 is a prime.

It is a super-2 number, since 2×2969923009² = 17640885358775228162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2969923007) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 27249 + ... + 81745.

Almost surely, 2^2969923009 is an apocalyptic number.

2969923009 is the 54497-th square number.

2969923009 is the 27249-th centered octagonal number.

It is an amenable number.

2969923009 is a deficient number, since it is larger than the sum of its proper divisors (54498).

2969923009 is an frugal number, since it uses more digits than its factorization.

2969923009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108994 (or 54497 counting only the distinct ones).

The product of its (nonzero) digits is 472392, while the sum is 49.

The cubic root of 2969923009 is about 1437.4135362638.

Multiplying 2969923009 by its sum of digits (49), we get a square (145526227441 = 381479²).

The spelling of 2969923009 in words is "two billion, nine hundred sixty-nine million, nine hundred twenty-three thousand, nine".