787969799 has 2 divisors, whose sum is σ = 787969800. Its totient is φ = 787969798.

The previous prime is 787969783. The next prime is 787969801. The reversal of 787969799 is 997969787.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 787969799 - 2⁴ = 787969783 is a prime.

It is a super-2 number, since 2×787969799² = 1241792808272200802, which contains 22 as substring.

Together with 787969801, 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 (787969739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 393984899 + 393984900.

It is an arithmetic number, because the mean of its divisors is an integer number (393984900).

Almost surely, 2^787969799 is an apocalyptic number.

787969799 is a deficient number, since it is larger than the sum of its proper divisors (1).

787969799 is an equidigital number, since it uses as much as digits as its factorization.

787969799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108020304, while the sum is 71.

The square root of 787969799 is about 28070.7997570429. The cubic root of 787969799 is about 923.6409744231.

The spelling of 787969799 in words is "seven hundred eighty-seven million, nine hundred sixty-nine thousand, seven hundred ninety-nine".