4009620 has 48 divisors (see below), whose sum is σ = 11890368. Its totient is φ = 1006080.

The previous prime is 4009619. The next prime is 4009631. The reversal of 4009620 is 269004.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 946 + ... + 2985.

It is an arithmetic number, because the mean of its divisors is an integer number (247716).

Almost surely, 2^4009620 is an apocalyptic number.

It is an amenable number.

4009620 is an abundant number, since it is smaller than the sum of its proper divisors (7880748).

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

4009620 is a wasteful number, since it uses less digits than its factorization.

4009620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3960 (or 3958 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 4009620 is about 2002.4035557300. The cubic root of 4009620 is about 158.8672599665.

The spelling of 4009620 in words is "four million, nine thousand, six hundred twenty".