3978289790 has 16 divisors (see below), whose sum is σ = 7208347680. Its totient is φ = 1580776800.

The previous prime is 3978289771. The next prime is 3978289793. The reversal of 3978289790 is 979828793.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3978289793) 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, 1315805 + ... + 1318824.

It is an arithmetic number, because the mean of its divisors is an integer number (450521730).

Almost surely, 2^3978289790 is an apocalyptic number.

3978289790 is a deficient number, since it is larger than the sum of its proper divisors (3230057890).

3978289790 is a wasteful number, since it uses less digits than its factorization.

3978289790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2634787.

The product of its (nonzero) digits is 13716864, while the sum is 62.

The square root of 3978289790 is about 63073.6854004901. The cubic root of 3978289790 is about 1584.5239395974.

The spelling of 3978289790 in words is "three billion, nine hundred seventy-eight million, two hundred eighty-nine thousand, seven hundred ninety".