3421990 has 32 divisors (see below), whose sum is σ = 7239456. Its totient is φ = 1148160.

The previous prime is 3421939. The next prime is 3421993. The reversal of 3421990 is 991243.

It is a happy number.

3421990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3421993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234 + ... + 2626.

It is an arithmetic number, because the mean of its divisors is an integer number (226233).

Almost surely, 2^3421990 is an apocalyptic number.

3421990 is an abundant number, since it is smaller than the sum of its proper divisors (3817466).

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

3421990 is a wasteful number, since it uses less digits than its factorization.

3421990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2424.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 3421990 is about 1849.8621570268. The cubic root of 3421990 is about 150.6929420939.

It can be divided in two parts, 342 and 1990, that added together give a palindrome (2332).

The spelling of 3421990 in words is "three million, four hundred twenty-one thousand, nine hundred ninety".