6449898294 has 320 divisors, whose sum is σ = 18441561600. Its totient is φ = 1642540032.

The previous prime is 6449898271. The next prime is 6449898307. The reversal of 6449898294 is 4928989446.

6449898294 is a `hidden beast` number, since 64 + 498 + 9 + 82 + 9 + 4 = 666.

It is a super-2 number, since 2×6449898294² = 83202376005888220872, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 46402077 + ... + 46402215.

It is an arithmetic number, because the mean of its divisors is an integer number (57629880).

Almost surely, 2^6449898294 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6449898294, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9220780800).

6449898294 is an abundant number, since it is smaller than the sum of its proper divisors (11991663306).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6449898294 is a wasteful number, since it uses less digits than its factorization.

6449898294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289 (or 280 counting only the distinct ones).

The product of its digits is 35831808, while the sum is 63.

The square root of 6449898294 is about 80311.2588246505. The cubic root of 6449898294 is about 1861.4482009584.

The spelling of 6449898294 in words is "six billion, four hundred forty-nine million, eight hundred ninety-eight thousand, two hundred ninety-four".