4947523988 has 72 divisors (see below), whose sum is σ = 9850623552. Its totient is φ = 2174079600.

The previous prime is 4947523979. The next prime is 4947523993. The reversal of 4947523988 is 8893257494.

It is a happy number.

It is a super-2 number, since 2×4947523988² = 48955987223670848288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5115881 + ... + 5116847.

It is an arithmetic number, because the mean of its divisors is an integer number (136814216).

Almost surely, 2^4947523988 is an apocalyptic number.

It is an amenable number.

4947523988 is a deficient number, since it is larger than the sum of its proper divisors (4903099564).

4947523988 is a wasteful number, since it uses less digits than its factorization.

4947523988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066 (or 1011 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 59.

The square root of 4947523988 is about 70338.6379453000. The cubic root of 4947523988 is about 1703.9727145043.

The spelling of 4947523988 in words is "four billion, nine hundred forty-seven million, five hundred twenty-three thousand, nine hundred eighty-eight".