29161391 has 8 divisors (see below), whose sum is σ = 33361920. Its totient is φ = 24969528.

The previous prime is 29161387. The next prime is 29161403. The reversal of 29161391 is 19316192.

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

It is a cyclic number.

It is not a de Polignac number, because 29161391 - 2² = 29161387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29161331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8690 + ... + 11568.

It is an arithmetic number, because the mean of its divisors is an integer number (4170240).

Almost surely, 2^29161391 is an apocalyptic number.

29161391 is a deficient number, since it is larger than the sum of its proper divisors (4200529).

29161391 is a wasteful number, since it uses less digits than its factorization.

29161391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4333.

The product of its digits is 2916, while the sum is 32.

The square root of 29161391 is about 5400.1287947604. The cubic root of 29161391 is about 307.8005645144.

The spelling of 29161391 in words is "twenty-nine million, one hundred sixty-one thousand, three hundred ninety-one".