4978749907 has 4 divisors (see below), whose sum is σ = 4998585816. Its totient is φ = 4958914000.

The previous prime is 4978749871. The next prime is 4978749917. The reversal of 4978749907 is 7099478794.

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

It is a cyclic number.

It is not a de Polignac number, because 4978749907 - 2⁷ = 4978749779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4978749917) 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, 9917578 + ... + 9918079.

It is an arithmetic number, because the mean of its divisors is an integer number (1249646454).

Almost surely, 2^4978749907 is an apocalyptic number.

4978749907 is a deficient number, since it is larger than the sum of its proper divisors (19835909).

4978749907 is a wasteful number, since it uses less digits than its factorization.

4978749907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19835908.

The product of its (nonzero) digits is 32006016, while the sum is 64.

The square root of 4978749907 is about 70560.2572770253. The cubic root of 4978749907 is about 1707.5500301676.

The spelling of 4978749907 in words is "four billion, nine hundred seventy-eight million, seven hundred forty-nine thousand, nine hundred seven".