7944470045 has 4 divisors (see below), whose sum is σ = 9533364060. Its totient is φ = 6355576032.

The previous prime is 7944469961. The next prime is 7944470069. The reversal of 7944470045 is 5400744497.

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 2946969796 + 4997500249 = 54286^2 + 70693^2 .

It is a cyclic number.

It is not a de Polignac number, because 7944470045 - 2¹⁶ = 7944404509 is a prime.

It is a super-2 number, since 2×7944470045² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7944469978 and 7944470005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 794447000 + ... + 794447009.

It is an arithmetic number, because the mean of its divisors is an integer number (2383341015).

Almost surely, 2^7944470045 is an apocalyptic number.

It is an amenable number.

7944470045 is a deficient number, since it is larger than the sum of its proper divisors (1588894015).

7944470045 is a wasteful number, since it uses less digits than its factorization.

7944470045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1588894014.

The product of its (nonzero) digits is 564480, while the sum is 44.

The square root of 7944470045 is about 89131.7566583314. The cubic root of 7944470045 is about 1995.3617554089.

The spelling of 7944470045 in words is "seven billion, nine hundred forty-four million, four hundred seventy thousand, forty-five".