4978739 has 4 divisors (see below), whose sum is σ = 5271624. Its totient is φ = 4685856.

The previous prime is 4978723. The next prime is 4978751. The reversal of 4978739 is 9378794.

4978739 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4978739 - 2⁴ = 4978723 is a prime.

It is a d-powerful number, because it can be written as 4⁵ + 9³ + 7⁵ + 8³ + 7⁶ + 3¹⁴ + 9⁵ .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4978693 and 4978702.

It is not an unprimeable number, because it can be changed into a prime (4978709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146417 + ... + 146450.

It is an arithmetic number, because the mean of its divisors is an integer number (1317906).

Almost surely, 2^4978739 is an apocalyptic number.

4978739 is a deficient number, since it is larger than the sum of its proper divisors (292885).

4978739 is a wasteful number, since it uses less digits than its factorization.

4978739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292884.

The product of its digits is 381024, while the sum is 47.

The square root of 4978739 is about 2231.3088087488. The cubic root of 4978739 is about 170.7548783251.

The spelling of 4978739 in words is "four million, nine hundred seventy-eight thousand, seven hundred thirty-nine".