4905390647 has 4 divisors (see below), whose sum is σ = 5193943056. Its totient is φ = 4616838240.

The previous prime is 4905390641. The next prime is 4905390649. The reversal of 4905390647 is 7460935094.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7460935094 = 2 ⋅3730467547.

It is not a de Polignac number, because 4905390647 - 2⁴ = 4905390631 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 (4905390641) 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, 144276179 + ... + 144276212.

It is an arithmetic number, because the mean of its divisors is an integer number (1298485764).

Almost surely, 2^4905390647 is an apocalyptic number.

4905390647 is a deficient number, since it is larger than the sum of its proper divisors (288552409).

4905390647 is a wasteful number, since it uses less digits than its factorization.

4905390647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288552408.

The product of its (nonzero) digits is 816480, while the sum is 47.

The square root of 4905390647 is about 70038.4940372079. The cubic root of 4905390647 is about 1699.1218817889.

The spelling of 4905390647 in words is "four billion, nine hundred five million, three hundred ninety thousand, six hundred forty-seven".