29977777393 has 2 divisors, whose sum is σ = 29977777394. Its totient is φ = 29977777392.

The previous prime is 29977777391. The next prime is 29977777411. The reversal of 29977777393 is 39377777992.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25944511329 + 4033266064 = 161073^2 + 63508^2 .

It is a cyclic number.

It is not a de Polignac number, because 29977777393 - 2¹ = 29977777391 is a prime.

Together with 29977777391, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (29977777391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14988888696 + 14988888697.

It is an arithmetic number, because the mean of its divisors is an integer number (14988888697).

Almost surely, 2^29977777393 is an apocalyptic number.

It is an amenable number.

29977777393 is a deficient number, since it is larger than the sum of its proper divisors (1).

29977777393 is an equidigital number, since it uses as much as digits as its factorization.

29977777393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 220541454, while the sum is 70.

The spelling of 29977777393 in words is "twenty-nine billion, nine hundred seventy-seven million, seven hundred seventy-seven thousand, three hundred ninety-three".