3951249149 has 2 divisors, whose sum is σ = 3951249150. Its totient is φ = 3951249148.

The previous prime is 3951249121. The next prime is 3951249151. The reversal of 3951249149 is 9419421593.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3924396025 + 26853124 = 62645^2 + 5182^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3951249149 is a prime.

It is a super-2 number, since 2×3951249149² = 31224739674946448402, which contains 22 as substring.

Together with 3951249151, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3951249109) 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 as a sum of consecutive naturals, namely, 1975624574 + 1975624575.

It is an arithmetic number, because the mean of its divisors is an integer number (1975624575).

Almost surely, 2^3951249149 is an apocalyptic number.

It is an amenable number.

3951249149 is a deficient number, since it is larger than the sum of its proper divisors (1).

3951249149 is an equidigital number, since it uses as much as digits as its factorization.

3951249149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 349920, while the sum is 47.

The square root of 3951249149 is about 62858.9623601917. The cubic root of 3951249149 is about 1580.9257445405.

The spelling of 3951249149 in words is "three billion, nine hundred fifty-one million, two hundred forty-nine thousand, one hundred forty-nine".