4909988 has 6 divisors (see below), whose sum is σ = 8592486. Its totient is φ = 2454992.

The previous prime is 4909981. The next prime is 4910027. The reversal of 4909988 is 8899094.

It can be written as a sum of positive squares in only one way, i.e., 4700224 + 209764 = 2168^2 + 458^2 .

It is not an unprimeable number, because it can be changed into a prime (4909981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613745 + ... + 613752.

It is an arithmetic number, because the mean of its divisors is an integer number (1432081).

Almost surely, 2^4909988 is an apocalyptic number.

It is an amenable number.

4909988 is a deficient number, since it is larger than the sum of its proper divisors (3682498).

4909988 is a wasteful number, since it uses less digits than its factorization.

4909988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227501 (or 1227499 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 47.

The square root of 4909988 is about 2215.8492728523. The cubic root of 4909988 is about 169.9652524137.

The spelling of 4909988 in words is "four million, nine hundred nine thousand, nine hundred eighty-eight".