29938677949 has 2 divisors, whose sum is σ = 29938677950. Its totient is φ = 29938677948.

The previous prime is 29938677931. The next prime is 29938677961. The reversal of 29938677949 is 94977683992.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26737155225 + 3201522724 = 163515^2 + 56582^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29938677949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29938677919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14969338974 + 14969338975.

It is an arithmetic number, because the mean of its divisors is an integer number (14969338975).

Almost surely, 2^29938677949 is an apocalyptic number.

It is an amenable number.

29938677949 is a deficient number, since it is larger than the sum of its proper divisors (1).

29938677949 is an equidigital number, since it uses as much as digits as its factorization.

29938677949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 370355328, while the sum is 73.

The spelling of 29938677949 in words is "twenty-nine billion, nine hundred thirty-eight million, six hundred seventy-seven thousand, nine hundred forty-nine".