961397 has 2 divisors, whose sum is σ = 961398. Its totient is φ = 961396.

The previous prime is 961393. The next prime is 961399. The reversal of 961397 is 793169.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 654481 + 306916 = 809^2 + 554^2 .

It is a cyclic number.

It is not a de Polignac number, because 961397 - 2² = 961393 is a prime.

Together with 961399, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 961397.

It is not a weakly prime, because it can be changed into another prime (961393) 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, 480698 + 480699.

It is an arithmetic number, because the mean of its divisors is an integer number (480699).

2⁹⁶¹³⁹⁷ is an apocalyptic number.

It is an amenable number.

961397 is a deficient number, since it is larger than the sum of its proper divisors (1).

961397 is an equidigital number, since it uses as much as digits as its factorization.

961397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10206, while the sum is 35.

The square root of 961397 is about 980.5085415232. The cubic root of 961397 is about 98.6963111456.

The spelling of 961397 in words is "nine hundred sixty-one thousand, three hundred ninety-seven".