2949621949 has 2 divisors, whose sum is σ = 2949621950. Its totient is φ = 2949621948.

The previous prime is 2949621893. The next prime is 2949621953. The reversal of 2949621949 is 9491269492.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2101764025 + 847857924 = 45845^2 + 29118^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2949621949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2949621949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2949621749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1474810974 + 1474810975.

It is an arithmetic number, because the mean of its divisors is an integer number (1474810975).

Almost surely, 2^2949621949 is an apocalyptic number.

It is an amenable number.

2949621949 is a deficient number, since it is larger than the sum of its proper divisors (1).

2949621949 is an equidigital number, since it uses as much as digits as its factorization.

2949621949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2519424, while the sum is 55.

The square root of 2949621949 is about 54310.4221029445. The cubic root of 2949621949 is about 1434.1308741147.

The spelling of 2949621949 in words is "two billion, nine hundred forty-nine million, six hundred twenty-one thousand, nine hundred forty-nine".