6869805129 has 84 divisors (see below), whose sum is σ = 11920258000. Its totient is φ = 3943423440.

The previous prime is 6869805119. The next prime is 6869805139. The reversal of 6869805129 is 9215089686.

It is a happy number.

6869805129 is a `hidden beast` number, since 68 + 69 + 8 + 0 + 512 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (6869805119) and next prime (6869805139).

It is not a de Polignac number, because 6869805129 - 2¹³ = 6869796937 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (6869805109) by changing a digit.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 1673922 + ... + 1678020.

Almost surely, 2^6869805129 is an apocalyptic number.

It is an amenable number.

6869805129 is a deficient number, since it is larger than the sum of its proper divisors (5050452871).

6869805129 is a wasteful number, since it uses less digits than its factorization.

6869805129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4158 (or 4132 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 54.

The square root of 6869805129 is about 82884.2875881792. The cubic root of 6869805129 is about 1900.9971800656.

The spelling of 6869805129 in words is "six billion, eight hundred sixty-nine million, eight hundred five thousand, one hundred twenty-nine".