29115089 has 4 divisors (see below), whose sum is σ = 29130420. Its totient is φ = 29099760.

The previous prime is 29115083. The next prime is 29115127. The reversal of 29115089 is 98051192.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15484225 + 13630864 = 3935^2 + 3692^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29115089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29115083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4334 + ... + 8775.

It is an arithmetic number, because the mean of its divisors is an integer number (7282605).

Almost surely, 2^29115089 is an apocalyptic number.

It is an amenable number.

29115089 is a deficient number, since it is larger than the sum of its proper divisors (15331).

29115089 is a wasteful number, since it uses less digits than its factorization.

29115089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15330.

The product of its (nonzero) digits is 6480, while the sum is 35.

The square root of 29115089 is about 5395.8399716819. The cubic root of 29115089 is about 307.6375712457.

It can be divided in two parts, 2911 and 5089, that added together give a cube (8000 = 20³).

The spelling of 29115089 in words is "twenty-nine million, one hundred fifteen thousand, eighty-nine".