971393369 has 2 divisors, whose sum is σ = 971393370. Its totient is φ = 971393368.

The previous prime is 971393363. The next prime is 971393389. The reversal of 971393369 is 963393179.

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., 510217744 + 461175625 = 22588^2 + 21475^2 .

It is a cyclic number.

It is not a de Polignac number, because 971393369 - 2⁸ = 971393113 is a prime.

It is a super-2 number, since 2×971393369² = 1887210154674340322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (971393363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 485696684 + 485696685.

It is an arithmetic number, because the mean of its divisors is an integer number (485696685).

Almost surely, 2^971393369 is an apocalyptic number.

It is an amenable number.

971393369 is a deficient number, since it is larger than the sum of its proper divisors (1).

971393369 is an equidigital number, since it uses as much as digits as its factorization.

971393369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 826686, while the sum is 50.

The square root of 971393369 is about 31167.1841686091. The cubic root of 971393369 is about 990.3720565327.

The spelling of 971393369 in words is "nine hundred seventy-one million, three hundred ninety-three thousand, three hundred sixty-nine".