29427146909 has 2 divisors, whose sum is σ = 29427146910. Its totient is φ = 29427146908.

The previous prime is 29427146851. The next prime is 29427146939. The reversal of 29427146909 is 90964172492.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29365963225 + 61183684 = 171365^2 + 7822^2 .

It is a cyclic number.

It is not a de Polignac number, because 29427146909 - 2¹² = 29427142813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29427146939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14713573454 + 14713573455.

It is an arithmetic number, because the mean of its divisors is an integer number (14713573455).

Almost surely, 2^29427146909 is an apocalyptic number.

It is an amenable number.

29427146909 is a deficient number, since it is larger than the sum of its proper divisors (1).

29427146909 is an equidigital number, since it uses as much as digits as its factorization.

29427146909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1959552, while the sum is 53.

The spelling of 29427146909 in words is "twenty-nine billion, four hundred twenty-seven million, one hundred forty-six thousand, nine hundred nine".