4378994973 has 16 divisors (see below), whose sum is σ = 6512077440. Its totient is φ = 2908225152.

The previous prime is 4378994941. The next prime is 4378995011. The reversal of 4378994973 is 3794998734.

4378994973 is a `hidden beast` number, since 437 + 8 + 99 + 49 + 73 = 666.

It is not a de Polignac number, because 4378994973 - 2⁵ = 4378994941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4378994973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4378954973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 301236 + ... + 315437.

It is an arithmetic number, because the mean of its divisors is an integer number (407004840).

Almost surely, 2^4378994973 is an apocalyptic number.

It is an amenable number.

4378994973 is a deficient number, since it is larger than the sum of its proper divisors (2133082467).

4378994973 is a wasteful number, since it uses less digits than its factorization.

4378994973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616945 (or 616939 counting only the distinct ones).

The product of its digits is 41150592, while the sum is 63.

The square root of 4378994973 is about 66173.9750430636. The cubic root of 4378994973 is about 1636.0308254195.

The spelling of 4378994973 in words is "four billion, three hundred seventy-eight million, nine hundred ninety-four thousand, nine hundred seventy-three".