6989011440 has 160 divisors (see below), whose sum is σ = 23164517376. Its totient is φ = 1736970240.

The previous prime is 6989011399. The next prime is 6989011441. The reversal of 6989011440 is 441109896.

It is a junction number, because it is equal to n+sod(n) for n = 6989011392 and 6989011401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6989011441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 411925 + ... + 428555.

Almost surely, 2^6989011440 is an apocalyptic number.

6989011440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6989011440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11582258688).

6989011440 is an abundant number, since it is smaller than the sum of its proper divisors (16175505936).

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

6989011440 is a wasteful number, since it uses less digits than its factorization.

6989011440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16767 (or 16761 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 6989011440 is about 83600.3076549363. The cubic root of 6989011440 is about 1911.9296890632.

The spelling of 6989011440 in words is "six billion, nine hundred eighty-nine million, eleven thousand, four hundred forty".