3820990 has 32 divisors (see below), whose sum is σ = 7387200. Its totient is φ = 1419264.

The previous prime is 3820987. The next prime is 3820997. The reversal of 3820990 is 990283.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3820997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8286 + ... + 8734.

It is an arithmetic number, because the mean of its divisors is an integer number (230850).

Almost surely, 2^3820990 is an apocalyptic number.

3820990 is a deficient number, since it is larger than the sum of its proper divisors (3566210).

3820990 is a wasteful number, since it uses less digits than its factorization.

3820990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 3820990 is about 1954.7352761947. The cubic root of 3820990 is about 156.3358696004.

The spelling of 3820990 in words is "three million, eight hundred twenty thousand, nine hundred ninety".