4420290 has 96 divisors (see below), whose sum is σ = 12870144. Its totient is φ = 967680.

The previous prime is 4420249. The next prime is 4420309. The reversal of 4420290 is 920244.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 45522 + ... + 45618.

It is an arithmetic number, because the mean of its divisors is an integer number (134064).

Almost surely, 2^4420290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4420290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6435072).

4420290 is an abundant number, since it is smaller than the sum of its proper divisors (8449854).

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

4420290 is a wasteful number, since it uses less digits than its factorization.

4420290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 4420290 is about 2102.4485724983. The cubic root of 4420290 is about 164.1157471610.

The spelling of 4420290 in words is "four million, four hundred twenty thousand, two hundred ninety".