961247953 has 2 divisors, whose sum is σ = 961247954. Its totient is φ = 961247952.

The previous prime is 961247951. The next prime is 961248047. The reversal of 961247953 is 359742169.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 593068609 + 368179344 = 24353^2 + 19188^2 .

It is a cyclic number.

It is not a de Polignac number, because 961247953 - 2¹ = 961247951 is a prime.

Together with 961247951, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (961247951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480623976 + 480623977.

It is an arithmetic number, because the mean of its divisors is an integer number (480623977).

Almost surely, 2^961247953 is an apocalyptic number.

It is an amenable number.

961247953 is a deficient number, since it is larger than the sum of its proper divisors (1).

961247953 is an equidigital number, since it uses as much as digits as its factorization.

961247953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 408240, while the sum is 46.

The square root of 961247953 is about 31003.9989840020. The cubic root of 961247953 is about 986.9121053005.

The spelling of 961247953 in words is "nine hundred sixty-one million, two hundred forty-seven thousand, nine hundred fifty-three".