4722778947 has 32 divisors (see below), whose sum is σ = 6736608000. Its totient is φ = 2934534528.

The previous prime is 4722778867. The next prime is 4722778987. The reversal of 4722778947 is 7498772274.

It is not a de Polignac number, because 4722778947 - 2¹⁰ = 4722777923 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (4722778987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 906153 + ... + 911349.

It is an arithmetic number, because the mean of its divisors is an integer number (210519000).

Almost surely, 2^4722778947 is an apocalyptic number.

4722778947 is a deficient number, since it is larger than the sum of its proper divisors (2013829053).

4722778947 is a wasteful number, since it uses less digits than its factorization.

4722778947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5475.

The product of its digits is 11063808, while the sum is 57.

The square root of 4722778947 is about 68722.4777420023. The cubic root of 4722778947 is about 1677.7704441432.

The spelling of 4722778947 in words is "four billion, seven hundred twenty-two million, seven hundred seventy-eight thousand, nine hundred forty-seven".