8140000469 has 4 divisors (see below), whose sum is σ = 8618824044. Its totient is φ = 7661176896.

The previous prime is 8140000457. The next prime is 8140000483. The reversal of 8140000469 is 9640000418.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3145751569 + 4994248900 = 56087^2 + 70670^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8140000469 is a prime.

It is a super-2 number, since 2×8140000469² (a number of 21 digits) 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 (8140000409) 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, 239411762 + ... + 239411795.

It is an arithmetic number, because the mean of its divisors is an integer number (2154706011).

Almost surely, 2^8140000469 is an apocalyptic number.

It is an amenable number.

8140000469 is a deficient number, since it is larger than the sum of its proper divisors (478823575).

8140000469 is a wasteful number, since it uses less digits than its factorization.

8140000469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478823574.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 8140000469 is about 90221.9511482655. The cubic root of 8140000469 is about 2011.5993037747.

The spelling of 8140000469 in words is "eight billion, one hundred forty million, four hundred sixty-nine", and thus it is an aban number.