20590469929 has 4 divisors (see below), whose sum is σ = 21485707776. Its totient is φ = 19695232084.

The previous prime is 20590469881. The next prime is 20590469941. The reversal of 20590469929 is 92996409502.

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 20590469929 - 2¹³ = 20590461737 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 20590469929.

It is not an unprimeable number, because it can be changed into a prime (20590469959) 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, 447618889 + ... + 447618934.

It is an arithmetic number, because the mean of its divisors is an integer number (5371426944).

Almost surely, 2^20590469929 is an apocalyptic number.

It is an amenable number.

20590469929 is a deficient number, since it is larger than the sum of its proper divisors (895237847).

20590469929 is an equidigital number, since it uses as much as digits as its factorization.

20590469929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895237846.

The product of its (nonzero) digits is 3149280, while the sum is 55.

The spelling of 20590469929 in words is "twenty billion, five hundred ninety million, four hundred sixty-nine thousand, nine hundred twenty-nine".