29385478979 has 16 divisors (see below), whose sum is σ = 31870620288. Its totient is φ = 26987907072.

The previous prime is 29385478963. The next prime is 29385479017. The reversal of 29385478979 is 97987458392.

It is a cyclic number.

It is not a de Polignac number, because 29385478979 - 2⁴ = 29385478963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (29385478909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214697 + ... + 323829.

It is an arithmetic number, because the mean of its divisors is an integer number (1991913768).

Almost surely, 2^29385478979 is an apocalyptic number.

29385478979 is a deficient number, since it is larger than the sum of its proper divisors (2485141309).

29385478979 is a wasteful number, since it uses less digits than its factorization.

29385478979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109534.

The product of its digits is 274337280, while the sum is 71.

The spelling of 29385478979 in words is "twenty-nine billion, three hundred eighty-five million, four hundred seventy-eight thousand, nine hundred seventy-nine".