28935637399 has 2 divisors, whose sum is σ = 28935637400. Its totient is φ = 28935637398.

The previous prime is 28935637349. The next prime is 28935637421. The reversal of 28935637399 is 99373653982.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28935637399 is a prime.

It is a super-2 number, since 2×28935637399² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28935637399.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28935637349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14467818699 + 14467818700.

It is an arithmetic number, because the mean of its divisors is an integer number (14467818700).

Almost surely, 2^28935637399 is an apocalyptic number.

28935637399 is a deficient number, since it is larger than the sum of its proper divisors (1).

28935637399 is an equidigital number, since it uses as much as digits as its factorization.

28935637399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 66134880, while the sum is 64.

The spelling of 28935637399 in words is "twenty-eight billion, nine hundred thirty-five million, six hundred thirty-seven thousand, three hundred ninety-nine".