15970949 has 2 divisors, whose sum is σ = 15970950. Its totient is φ = 15970948.

The previous prime is 15970937. The next prime is 15970951. The reversal of 15970949 is 94907951.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15602500 + 368449 = 3950^2 + 607^2 .

It is an emirp because it is prime and its reverse (94907951) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15970949 - 2⁸ = 15970693 is a prime.

Together with 15970951, 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 (15970919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7985474 + 7985475.

It is an arithmetic number, because the mean of its divisors is an integer number (7985475).

Almost surely, 2^15970949 is an apocalyptic number.

It is an amenable number.

15970949 is a deficient number, since it is larger than the sum of its proper divisors (1).

15970949 is an equidigital number, since it uses as much as digits as its factorization.

15970949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 102060, while the sum is 44.

The square root of 15970949 is about 3996.3669751413. The cubic root of 15970949 is about 251.8316093899.

The spelling of 15970949 in words is "fifteen million, nine hundred seventy thousand, nine hundred forty-nine".