2909923 has 2 divisors, whose sum is σ = 2909924. Its totient is φ = 2909922.

The previous prime is 2909909. The next prime is 2909957. The reversal of 2909923 is 3299092.

It is an a-pointer prime, because the next prime (2909957) can be obtained adding 2909923 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2909923 - 2¹⁷ = 2778851 is a prime.

It is not a weakly prime, because it can be changed into another prime (2909993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1454961 + 1454962.

It is an arithmetic number, because the mean of its divisors is an integer number (1454962).

2^2909923 is an apocalyptic number.

2909923 is a deficient number, since it is larger than the sum of its proper divisors (1).

2909923 is an equidigital number, since it uses as much as digits as its factorization.

2909923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 2909923 is about 1705.8496416742. The cubic root of 2909923 is about 142.7667804259.

The spelling of 2909923 in words is "two million, nine hundred nine thousand, nine hundred twenty-three".