4978390 has 8 divisors (see below), whose sum is σ = 8961120. Its totient is φ = 1991352.

The previous prime is 4978367. The next prime is 4978397. The reversal of 4978390 is 938794.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4978397) 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, 248910 + ... + 248929.

It is an arithmetic number, because the mean of its divisors is an integer number (1120140).

Almost surely, 2^4978390 is an apocalyptic number.

4978390 is a deficient number, since it is larger than the sum of its proper divisors (3982730).

4978390 is a wasteful number, since it uses less digits than its factorization.

4978390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497846.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 4978390 is about 2231.2306021566. The cubic root of 4978390 is about 170.7508883693.

The spelling of 4978390 in words is "four million, nine hundred seventy-eight thousand, three hundred ninety".