2909614021 has 4 divisors (see below), whose sum is σ = 2920430700. Its totient is φ = 2898797344.

The previous prime is 2909613997. The next prime is 2909614031. The reversal of 2909614021 is 1204169092.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 562211521 + 2347402500 = 23711^2 + 48450^2 .

It is a cyclic number.

It is not a de Polignac number, because 2909614021 - 2⁵ = 2909613989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2909614031) 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 3 ways as a sum of consecutive naturals, for example, 5407936 + ... + 5408473.

It is an arithmetic number, because the mean of its divisors is an integer number (730107675).

Almost surely, 2^2909614021 is an apocalyptic number.

It is an amenable number.

2909614021 is a deficient number, since it is larger than the sum of its proper divisors (10816679).

2909614021 is a wasteful number, since it uses less digits than its factorization.

2909614021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10816678.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 2909614021 is about 53940.8381562615. The cubic root of 2909614021 is about 1427.6172719958.

The spelling of 2909614021 in words is "two billion, nine hundred nine million, six hundred fourteen thousand, twenty-one".