2909123941 has 2 divisors, whose sum is σ = 2909123942. Its totient is φ = 2909123940.

The previous prime is 2909123939. The next prime is 2909123957. The reversal of 2909123941 is 1493219092.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2889062500 + 20061441 = 53750^2 + 4479^2 .

It is a cyclic number.

It is not a de Polignac number, because 2909123941 - 2¹ = 2909123939 is a prime.

Together with 2909123939, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 2909123894 and 2909123903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2909123981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1454561970 + 1454561971.

It is an arithmetic number, because the mean of its divisors is an integer number (1454561971).

Almost surely, 2^2909123941 is an apocalyptic number.

It is an amenable number.

2909123941 is a deficient number, since it is larger than the sum of its proper divisors (1).

2909123941 is an equidigital number, since it uses as much as digits as its factorization.

2909123941 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 2909123941 is about 53936.2952101829. The cubic root of 2909123941 is about 1427.5371140605.

The spelling of 2909123941 in words is "two billion, nine hundred nine million, one hundred twenty-three thousand, nine hundred forty-one".