29144421 has 16 divisors (see below), whose sum is σ = 43497600. Its totient is φ = 19285344.

The previous prime is 29144393. The next prime is 29144429. The reversal of 29144421 is 12444192.

It is a happy number.

It is not a de Polignac number, because 29144421 - 2⁵ = 29144389 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29144429) 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, 241 + ... + 7638.

It is an arithmetic number, because the mean of its divisors is an integer number (2718600).

Almost surely, 2^29144421 is an apocalyptic number.

It is an amenable number.

29144421 is a deficient number, since it is larger than the sum of its proper divisors (14353179).

29144421 is a wasteful number, since it uses less digits than its factorization.

29144421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8025 (or 8019 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 29144421 is about 5398.5573072813. The cubic root of 29144421 is about 307.7408464083.

The spelling of 29144421 in words is "twenty-nine million, one hundred forty-four thousand, four hundred twenty-one".