4947890 has 8 divisors (see below), whose sum is σ = 8906220. Its totient is φ = 1979152.

The previous prime is 4947871. The next prime is 4947949. The reversal of 4947890 is 987494.

It can be written as a sum of positive squares in 2 ways, for example, as 4635409 + 312481 = 2153^2 + 559^2 .

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

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247385 + ... + 247404.

Almost surely, 2^4947890 is an apocalyptic number.

4947890 is a deficient number, since it is larger than the sum of its proper divisors (3958330).

4947890 is a wasteful number, since it uses less digits than its factorization.

4947890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494796.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 4947890 is about 2224.3853083493. The cubic root of 4947890 is about 170.4014732767.

The spelling of 4947890 in words is "four million, nine hundred forty-seven thousand, eight hundred ninety".