20064469 has 2 divisors, whose sum is σ = 20064470. Its totient is φ = 20064468.

The previous prime is 20064461. The next prime is 20064479. The reversal of 20064469 is 96446002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19624900 + 439569 = 4430^2 + 663^2 .

It is a cyclic number.

It is not a de Polignac number, because 20064469 - 2³ = 20064461 is a prime.

It is a super-2 number, since 2×20064469² = 805165832503922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20064469.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20064461) 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 as a sum of consecutive naturals, namely, 10032234 + 10032235.

It is an arithmetic number, because the mean of its divisors is an integer number (10032235).

Almost surely, 2^20064469 is an apocalyptic number.

It is an amenable number.

20064469 is a deficient number, since it is larger than the sum of its proper divisors (1).

20064469 is an equidigital number, since it uses as much as digits as its factorization.

20064469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 20064469 is about 4479.3380091259. The cubic root of 20064469 is about 271.7331084849.

The spelling of 20064469 in words is "twenty million, sixty-four thousand, four hundred sixty-nine".