4009572 has 54 divisors (see below), whose sum is σ = 11795238. Its totient is φ = 1145088.

The previous prime is 4009549. The next prime is 4009619. The reversal of 4009572 is 2759004.

It can be written as a sum of positive squares in only one way, i.e., 3896676 + 112896 = 1974^2 + 336^2 .

It is a nialpdrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 628 + ... + 2900.

Almost surely, 2^4009572 is an apocalyptic number.

4009572 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4009572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5897619).

4009572 is an abundant number, since it is smaller than the sum of its proper divisors (7785666).

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

4009572 is a wasteful number, since it uses less digits than its factorization.

4009572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2297 (or 2285 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 4009572 is about 2002.3915700981. The cubic root of 4009572 is about 158.8666260196.

The spelling of 4009572 in words is "four million, nine thousand, five hundred seventy-two".