6440798350 has 24 divisors (see below), whose sum is σ = 13691297808. Its totient is φ = 2208273600.

The previous prime is 6440798327. The next prime is 6440798393. The reversal of 6440798350 is 538970446.

It is a self number, because there is not a number n which added to its sum of digits gives 6440798350.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9200791 + ... + 9201490.

It is an arithmetic number, because the mean of its divisors is an integer number (570470742).

Almost surely, 2^6440798350 is an apocalyptic number.

6440798350 is an abundant number, since it is smaller than the sum of its proper divisors (7250499458).

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

6440798350 is a wasteful number, since it uses less digits than its factorization.

6440798350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18402300 (or 18402295 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 46.

The square root of 6440798350 is about 80254.5846042455. The cubic root of 6440798350 is about 1860.5723707710.

The spelling of 6440798350 in words is "six billion, four hundred forty million, seven hundred ninety-eight thousand, three hundred fifty".