6399733298 has 12 divisors (see below), whose sum is σ = 11166881742. Its totient is φ = 2742742800.

The previous prime is 6399733271. The next prime is 6399733303. The reversal of 6399733298 is 8923379936.

It can be written as a sum of positive squares in only one way, i.e., 4516780849 + 1882952449 = 67207^2 + 43393^2 .

It is a super-3 number, since 3×6399733298³ (a number of 30 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32651603 + ... + 32651798.

Almost surely, 2^6399733298 is an apocalyptic number.

6399733298 is a deficient number, since it is larger than the sum of its proper divisors (4767148444).

6399733298 is a wasteful number, since it uses less digits than its factorization.

6399733298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65303417 (or 65303410 counting only the distinct ones).

The product of its digits is 13226976, while the sum is 59.

The square root of 6399733298 is about 79998.3330951339. Note that the first 3 decimals coincide. The cubic root of 6399733298 is about 1856.6097430655.

The spelling of 6399733298 in words is "six billion, three hundred ninety-nine million, seven hundred thirty-three thousand, two hundred ninety-eight".