4987978 has 16 divisors (see below), whose sum is σ = 7801920. Its totient is φ = 2389600.

The previous prime is 4987973. The next prime is 4987979. The reversal of 4987978 is 8797894.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (4987973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4323 + ... + 5353.

It is an arithmetic number, because the mean of its divisors is an integer number (487620).

Almost surely, 2^4987978 is an apocalyptic number.

4987978 is a deficient number, since it is larger than the sum of its proper divisors (2813942).

4987978 is a wasteful number, since it uses less digits than its factorization.

4987978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1133.

The product of its digits is 1016064, while the sum is 52.

The square root of 4987978 is about 2233.3781587541. The cubic root of 4987978 is about 170.8604358084.

The spelling of 4987978 in words is "four million, nine hundred eighty-seven thousand, nine hundred seventy-eight".