29009138479 has 2 divisors, whose sum is σ = 29009138480. Its totient is φ = 29009138478.

The previous prime is 29009138449. The next prime is 29009138489. The reversal of 29009138479 is 97483190092.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 29009138479 - 2⁹ = 29009137967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29009138449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14504569239 + 14504569240.

It is an arithmetic number, because the mean of its divisors is an integer number (14504569240).

Almost surely, 2^29009138479 is an apocalyptic number.

29009138479 is a deficient number, since it is larger than the sum of its proper divisors (1).

29009138479 is an equidigital number, since it uses as much as digits as its factorization.

29009138479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 52.

The spelling of 29009138479 in words is "twenty-nine billion, nine million, one hundred thirty-eight thousand, four hundred seventy-nine".