969958391 has 2 divisors, whose sum is σ = 969958392. Its totient is φ = 969958390.

The previous prime is 969958351. The next prime is 969958393. The reversal of 969958391 is 193859969.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 969958391 - 2¹⁰ = 969957367 is a prime.

Together with 969958393, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 969958391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (969958393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 484979195 + 484979196.

It is an arithmetic number, because the mean of its divisors is an integer number (484979196).

Almost surely, 2^969958391 is an apocalyptic number.

969958391 is a deficient number, since it is larger than the sum of its proper divisors (1).

969958391 is an equidigital number, since it uses as much as digits as its factorization.

969958391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4723920, while the sum is 59.

The square root of 969958391 is about 31144.1550053939. The cubic root of 969958391 is about 989.8841448617.

The spelling of 969958391 in words is "nine hundred sixty-nine million, nine hundred fifty-eight thousand, three hundred ninety-one".