6398820969 has 32 divisors (see below), whose sum is σ = 9301340160. Its totient is φ = 3899548800.

The previous prime is 6398820941. The next prime is 6398821001. The reversal of 6398820969 is 9690288936.

It is not a de Polignac number, because 6398820969 - 2¹² = 6398816873 is a prime.

It is a super-2 number, since 2×6398820969² = 81889819586628197922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6398820919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 173389 + ... + 207029.

It is an arithmetic number, because the mean of its divisors is an integer number (290666880).

Almost surely, 2^6398820969 is an apocalyptic number.

It is an amenable number.

6398820969 is a deficient number, since it is larger than the sum of its proper divisors (2902519191).

6398820969 is a wasteful number, since it uses less digits than its factorization.

6398820969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33781.

The product of its (nonzero) digits is 10077696, while the sum is 60.

The square root of 6398820969 is about 79992.6307168354. The cubic root of 6398820969 is about 1856.5215144197.

The spelling of 6398820969 in words is "six billion, three hundred ninety-eight million, eight hundred twenty thousand, nine hundred sixty-nine".