29399339478779 has 2 divisors, whose sum is σ = 29399339478780. Its totient is φ = 29399339478778.

The previous prime is 29399339478709. The next prime is 29399339478787. The reversal of 29399339478779 is 97787493399392.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29399339478779 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 29399339478694 and 29399339478703.

It is not a weakly prime, because it can be changed into another prime (29399339478709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14699669739389 + 14699669739390.

It is an arithmetic number, because the mean of its divisors is an integer number (14699669739390).

Almost surely, 2^{29399339478779} is an apocalyptic number.

29399339478779 is a deficient number, since it is larger than the sum of its proper divisors (1).

29399339478779 is an equidigital number, since it uses as much as digits as its factorization.

29399339478779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34998578496, while the sum is 89.

The spelling of 29399339478779 in words is "twenty-nine trillion, three hundred ninety-nine billion, three hundred thirty-nine million, four hundred seventy-eight thousand, seven hundred seventy-nine".