20299069 has 4 divisors (see below), whose sum is σ = 23198944. Its totient is φ = 17399196.

The previous prime is 20299063. The next prime is 20299073. The reversal of 20299069 is 96099202.

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, and also an emirpimes, since its reverse is a distinct semiprime: 96099202 = 2 ⋅48049601.

It is a cyclic number.

It is not a de Polignac number, because 20299069 - 2⁹ = 20298557 is a prime.

It is a super-2 number, since 2×20299069² = 824104404533522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20299063) 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, 1449927 + ... + 1449940.

It is an arithmetic number, because the mean of its divisors is an integer number (5799736).

Almost surely, 2^20299069 is an apocalyptic number.

It is an amenable number.

20299069 is a deficient number, since it is larger than the sum of its proper divisors (2899875).

20299069 is an equidigital number, since it uses as much as digits as its factorization.

20299069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2899874.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 20299069 is about 4505.4488122716. The cubic root of 20299069 is about 272.7880700788.

The spelling of 20299069 in words is "twenty million, two hundred ninety-nine thousand, sixty-nine".