4975978 has 8 divisors (see below), whose sum is σ = 8530272. Its totient is φ = 2132556.

The previous prime is 4975969. The next prime is 4975979. The reversal of 4975978 is 8795794.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (4975979) 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, 177700 + ... + 177727.

It is an arithmetic number, because the mean of its divisors is an integer number (1066284).

Almost surely, 2^4975978 is an apocalyptic number.

4975978 is a deficient number, since it is larger than the sum of its proper divisors (3554294).

4975978 is a wasteful number, since it uses less digits than its factorization.

4975978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355436.

The product of its digits is 635040, while the sum is 49.

The square root of 4975978 is about 2230.6900277717. The cubic root of 4975978 is about 170.7233079887.

The spelling of 4975978 in words is "four million, nine hundred seventy-five thousand, nine hundred seventy-eight".