4001790 has 64 divisors (see below), whose sum is σ = 10708992. Its totient is φ = 950400.

The previous prime is 4001779. The next prime is 4001791. The reversal of 4001790 is 971004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4001791) 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, 11925 + ... + 12255.

It is an arithmetic number, because the mean of its divisors is an integer number (167328).

Almost surely, 2^4001790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4001790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5354496).

4001790 is an abundant number, since it is smaller than the sum of its proper divisors (6707202).

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

4001790 is a wasteful number, since it uses less digits than its factorization.

4001790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 4001790 is about 2000.4474499471. The cubic root of 4001790 is about 158.7637803980.

Adding to 4001790 its reverse (971004), we get a palindrome (4972794).

The spelling of 4001790 in words is "four million, one thousand, seven hundred ninety".