969693839 has 2 divisors, whose sum is σ = 969693840. Its totient is φ = 969693838.

The previous prime is 969693799. The next prime is 969693841. The reversal of 969693839 is 938396969.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-969693839 is a prime.

It is a super-2 number, since 2×969693839² = 1880612282789115842, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 969693841, 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 (989693839) 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, 484846919 + 484846920.

It is an arithmetic number, because the mean of its divisors is an integer number (484846920).

Almost surely, 2^969693839 is an apocalyptic number.

969693839 is a deficient number, since it is larger than the sum of its proper divisors (1).

969693839 is an equidigital number, since it uses as much as digits as its factorization.

969693839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17006112, while the sum is 62.

The square root of 969693839 is about 31139.9074982570. The cubic root of 969693839 is about 989.7941411238.

The spelling of 969693839 in words is "nine hundred sixty-nine million, six hundred ninety-three thousand, eight hundred thirty-nine".