20069459 has 6 divisors (see below), whose sum is σ = 20572620. Its totient is φ = 19578320.

The previous prime is 20069443. The next prime is 20069471. The reversal of 20069459 is 95496002.

It is not a de Polignac number, because 20069459 - 2⁴ = 20069443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20069359) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4289 + ... + 7650.

It is an arithmetic number, because the mean of its divisors is an integer number (3428770).

Almost surely, 2^20069459 is an apocalyptic number.

20069459 is a deficient number, since it is larger than the sum of its proper divisors (503161).

20069459 is an equidigital number, since it uses as much as digits as its factorization.

20069459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12021 (or 11980 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 20069459 is about 4479.8949764476. The cubic root of 20069459 is about 271.7556331415.

The spelling of 20069459 in words is "twenty million, sixty-nine thousand, four hundred fifty-nine".