787973869 has 2 divisors, whose sum is σ = 787973870. Its totient is φ = 787973868.

The previous prime is 787973827. The next prime is 787973911. The reversal of 787973869 is 968379787.

It is a balanced prime because it is at equal distance from previous prime (787973827) and next prime (787973911).

It can be written as a sum of positive squares in only one way, i.e., 634536100 + 153437769 = 25190^2 + 12387^2 .

It is a cyclic number.

It is not a de Polignac number, because 787973869 - 2⁹ = 787973357 is a prime.

It is a super-2 number, since 2×787973869² = 1241805636453658322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 787973869.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (787973569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 393986934 + 393986935.

It is an arithmetic number, because the mean of its divisors is an integer number (393986935).

Almost surely, 2^787973869 is an apocalyptic number.

It is an amenable number.

787973869 is a deficient number, since it is larger than the sum of its proper divisors (1).

787973869 is an equidigital number, since it uses as much as digits as its factorization.

787973869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32006016, while the sum is 64.

The square root of 787973869 is about 28070.8722522119. The cubic root of 787973869 is about 923.6425646754.

The spelling of 787973869 in words is "seven hundred eighty-seven million, nine hundred seventy-three thousand, eight hundred sixty-nine".