3979020 has 96 divisors (see below), whose sum is σ = 12192768. Its totient is φ = 965632.

The previous prime is 3979013. The next prime is 3979021. The reversal of 3979020 is 209793.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3979021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47899 + ... + 47981.

It is an arithmetic number, because the mean of its divisors is an integer number (127008).

Almost surely, 2^3979020 is an apocalyptic number.

3979020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3979020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6096384).

3979020 is an abundant number, since it is smaller than the sum of its proper divisors (8213748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3979020 is a wasteful number, since it uses less digits than its factorization.

3979020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 30.

The square root of 3979020 is about 1994.7481043981. The cubic root of 3979020 is about 158.4620879447.

The spelling of 3979020 in words is "three million, nine hundred seventy-nine thousand, twenty".