791969839 has 2 divisors, whose sum is σ = 791969840. Its totient is φ = 791969838.

The previous prime is 791969821. The next prime is 791969851. The reversal of 791969839 is 938969197.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 791969839 - 2¹³ = 791961647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (791969819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 395984919 + 395984920.

It is an arithmetic number, because the mean of its divisors is an integer number (395984920).

Almost surely, 2^791969839 is an apocalyptic number.

791969839 is a deficient number, since it is larger than the sum of its proper divisors (1).

791969839 is an equidigital number, since it uses as much as digits as its factorization.

791969839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6613488, while the sum is 61.

The square root of 791969839 is about 28141.9586916050. The cubic root of 791969839 is about 925.2012570118.

The spelling of 791969839 in words is "seven hundred ninety-one million, nine hundred sixty-nine thousand, eight hundred thirty-nine".