3922890 has 32 divisors (see below), whose sum is σ = 9637056. Its totient is φ = 1021440.

The previous prime is 3922871. The next prime is 3922907. The reversal of 3922890 is 982293.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231 + ... + 2810.

It is an arithmetic number, because the mean of its divisors is an integer number (301158).

Almost surely, 2^3922890 is an apocalyptic number.

3922890 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3922890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4818528).

3922890 is an abundant number, since it is smaller than the sum of its proper divisors (5714166).

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

3922890 is a wasteful number, since it uses less digits than its factorization.

3922890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3094.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 3922890 is about 1980.6286880685. The cubic root of 3922890 is about 157.7134420338.

The spelling of 3922890 in words is "three million, nine hundred twenty-two thousand, eight hundred ninety".