29221339409 has 4 divisors (see below), whose sum is σ = 29252197104. Its totient is φ = 29190481716.

The previous prime is 29221339387. The next prime is 29221339439. The reversal of 29221339409 is 90493312292.

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 29221339409 - 2²⁰ = 29220290833 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 29221339409.

It is not an unprimeable number, because it can be changed into a prime (29221339439) 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, 15427427 + ... + 15429320.

It is an arithmetic number, because the mean of its divisors is an integer number (7313049276).

Almost surely, 2^29221339409 is an apocalyptic number.

It is an amenable number.

29221339409 is a deficient number, since it is larger than the sum of its proper divisors (30857695).

29221339409 is an equidigital number, since it uses as much as digits as its factorization.

29221339409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30857694.

The product of its (nonzero) digits is 209952, while the sum is 44.

The spelling of 29221339409 in words is "twenty-nine billion, two hundred twenty-one million, three hundred thirty-nine thousand, four hundred nine".