29121369 has 8 divisors (see below), whose sum is σ = 40081152. Its totient is φ = 18787920.

The previous prime is 29121359. The next prime is 29121371. The reversal of 29121369 is 96312192.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 29121369 - 2⁴ = 29121353 is a prime.

It is a super-2 number, since 2×29121369² = 1696108264868322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (29121329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156474 + ... + 156659.

It is an arithmetic number, because the mean of its divisors is an integer number (5010144).

Almost surely, 2^29121369 is an apocalyptic number.

It is an amenable number.

29121369 is a deficient number, since it is larger than the sum of its proper divisors (10959783).

29121369 is a wasteful number, since it uses less digits than its factorization.

29121369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313167.

The product of its digits is 5832, while the sum is 33.

The square root of 29121369 is about 5396.4218700913. The cubic root of 29121369 is about 307.6596883578.

The spelling of 29121369 in words is "twenty-nine million, one hundred twenty-one thousand, three hundred sixty-nine".