29041921 has 4 divisors (see below), whose sum is σ = 29081344. Its totient is φ = 29002500.

The previous prime is 29041907. The next prime is 29041927. The reversal of 29041921 is 12914092.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 29041921 - 2¹¹ = 29039873 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 29041921.

It is not an unprimeable number, because it can be changed into a prime (29041927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18585 + ... + 20086.

It is an arithmetic number, because the mean of its divisors is an integer number (7270336).

Almost surely, 2^29041921 is an apocalyptic number.

It is an amenable number.

29041921 is a deficient number, since it is larger than the sum of its proper divisors (39423).

29041921 is an equidigital number, since it uses as much as digits as its factorization.

29041921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39422.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 29041921 is about 5389.0556686677. The cubic root of 29041921 is about 307.3796510556.

The spelling of 29041921 in words is "twenty-nine million, forty-one thousand, nine hundred twenty-one".