7044661389 has 16 divisors (see below), whose sum is σ = 9493077440. Its totient is φ = 4646471040.

The previous prime is 7044661387. The next prime is 7044661427. The reversal of 7044661389 is 9831664407.

It is not a de Polignac number, because 7044661389 - 2¹ = 7044661387 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7044661387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 210369 + ... + 241545.

It is an arithmetic number, because the mean of its divisors is an integer number (593317340).

Almost surely, 2^7044661389 is an apocalyptic number.

It is an amenable number.

7044661389 is a deficient number, since it is larger than the sum of its proper divisors (2448416051).

7044661389 is a wasteful number, since it uses less digits than its factorization.

7044661389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31980.

The product of its (nonzero) digits is 870912, while the sum is 48.

The square root of 7044661389 is about 83932.4811321577. The cubic root of 7044661389 is about 1916.9908546461.

The spelling of 7044661389 in words is "seven billion, forty-four million, six hundred sixty-one thousand, three hundred eighty-nine".