6989903386 has 16 divisors (see below), whose sum is σ = 10590604200. Its totient is φ = 3459760128.

The previous prime is 6989903363. The next prime is 6989903387. The reversal of 6989903386 is 6833099896.

It can be written as a sum of positive squares in 4 ways, for example, as 6983777761 + 6125625 = 83569^2 + 2475^2 .

It is a super-2 number, since 2×6989903386² = 97717498691228529992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6989903387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237450 + ... + 265258.

Almost surely, 2^6989903386 is an apocalyptic number.

6989903386 is a deficient number, since it is larger than the sum of its proper divisors (3600700814).

6989903386 is a wasteful number, since it uses less digits than its factorization.

6989903386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29073.

The product of its (nonzero) digits is 15116544, while the sum is 61.

The square root of 6989903386 is about 83605.6420703770. The cubic root of 6989903386 is about 1912.0110198547.

The spelling of 6989903386 in words is "six billion, nine hundred eighty-nine million, nine hundred three thousand, three hundred eighty-six".