6989903451 has 8 divisors (see below), whose sum is σ = 10355412560. Its totient is φ = 4659935616.

The previous prime is 6989903387. The next prime is 6989903477. The reversal of 6989903451 is 1543099896.

It is not a de Polignac number, because 6989903451 - 2⁶ = 6989903387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6989903051) 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, 129442630 + ... + 129442683.

It is an arithmetic number, because the mean of its divisors is an integer number (1294426570).

Almost surely, 2^6989903451 is an apocalyptic number.

6989903451 is a deficient number, since it is larger than the sum of its proper divisors (3365509109).

6989903451 is a wasteful number, since it uses less digits than its factorization.

6989903451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258885322 (or 258885316 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 54.

The square root of 6989903451 is about 83605.6424591068. The cubic root of 6989903451 is about 1912.0110257814.

The spelling of 6989903451 in words is "six billion, nine hundred eighty-nine million, nine hundred three thousand, four hundred fifty-one".