3909136 has 80 divisors (see below), whose sum is σ = 9999360. Its totient is φ = 1434240.

The previous prime is 3909127. The next prime is 3909179. The reversal of 3909136 is 6319093.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 3909098 and 3909107.

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, 23325 + ... + 23491.

It is an arithmetic number, because the mean of its divisors is an integer number (124992).

Almost surely, 2^3909136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3909136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4999680).

3909136 is an abundant number, since it is smaller than the sum of its proper divisors (6090224).

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

3909136 is a wasteful number, since it uses less digits than its factorization.

3909136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212 (or 206 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 31.

The square root of 3909136 is about 1977.1535094676. The cubic root of 3909136 is about 157.5289070986.

The spelling of 3909136 in words is "three million, nine hundred nine thousand, one hundred thirty-six".