4009405620 has 48 divisors (see below), whose sum is σ = 12246913728. Its totient is φ = 971976960.

The previous prime is 4009405607. The next prime is 4009405651. The reversal of 4009405620 is 265049004.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 3036769 + ... + 3038088.

It is an arithmetic number, because the mean of its divisors is an integer number (255144036).

Almost surely, 2^4009405620 is an apocalyptic number.

It is an amenable number.

4009405620 is an abundant number, since it is smaller than the sum of its proper divisors (8237508108).

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

4009405620 is a wasteful number, since it uses less digits than its factorization.

4009405620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6074880 (or 6074878 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 4009405620 is about 63319.8674982821. The cubic root of 4009405620 is about 1588.6442856184.

The spelling of 4009405620 in words is "four billion, nine million, four hundred five thousand, six hundred twenty".