4129890 has 64 divisors (see below), whose sum is σ = 10575360. Its totient is φ = 1030400.

The previous prime is 4129871. The next prime is 4129907. The reversal of 4129890 is 989214.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40840 + ... + 40940.

It is an arithmetic number, because the mean of its divisors is an integer number (165240).

Almost surely, 2^4129890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4129890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5287680).

4129890 is an abundant number, since it is smaller than the sum of its proper divisors (6445470).

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

4129890 is a wasteful number, since it uses less digits than its factorization.

4129890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 4129890 is about 2032.2130793792. The cubic root of 4129890 is about 160.4400645768.

The spelling of 4129890 in words is "four million, one hundred twenty-nine thousand, eight hundred ninety".