6989223649 has 4 divisors (see below), whose sum is σ = 6991678000. Its totient is φ = 6986769300.

The previous prime is 6989223643. The next prime is 6989223653. The reversal of 6989223649 is 9463229896.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6989223649 - 2³ = 6989223641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6989223593 and 6989223602.

It is not an unprimeable number, because it can be changed into a prime (6989223641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1222899 + ... + 1228600.

It is an arithmetic number, because the mean of its divisors is an integer number (1747919500).

Almost surely, 2^6989223649 is an apocalyptic number.

It is an amenable number.

6989223649 is a deficient number, since it is larger than the sum of its proper divisors (2454351).

6989223649 is a wasteful number, since it uses less digits than its factorization.

6989223649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2454350.

The product of its digits is 10077696, while the sum is 58.

The square root of 6989223649 is about 83601.5768332153. The cubic root of 6989223649 is about 1911.9490396578.

The spelling of 6989223649 in words is "six billion, nine hundred eighty-nine million, two hundred twenty-three thousand, six hundred forty-nine".