7471949789 has 4 divisors (see below), whose sum is σ = 7729603260. Its totient is φ = 7214296320.

The previous prime is 7471949783. The next prime is 7471949791. The reversal of 7471949789 is 9879491747.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5728219225 + 1743730564 = 75685^2 + 41758^2 .

It is a cyclic number.

It is not a de Polignac number, because 7471949789 - 2⁴ = 7471949773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7471949783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128826692 + ... + 128826749.

It is an arithmetic number, because the mean of its divisors is an integer number (1932400815).

Almost surely, 2^7471949789 is an apocalyptic number.

It is an amenable number.

7471949789 is a deficient number, since it is larger than the sum of its proper divisors (257653471).

7471949789 is a wasteful number, since it uses less digits than its factorization.

7471949789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257653470.

The product of its digits is 32006016, while the sum is 65.

The square root of 7471949789 is about 86440.4407034115. The cubic root of 7471949789 is about 1954.9904861488.

The spelling of 7471949789 in words is "seven billion, four hundred seventy-one million, nine hundred forty-nine thousand, seven hundred eighty-nine".