2909388 has 12 divisors (see below), whose sum is σ = 6788600. Its totient is φ = 969792.

The previous prime is 2909383. The next prime is 2909393. The reversal of 2909388 is 8839092.

It is an interprime number because it is at equal distance from previous prime (2909383) and next prime (2909393).

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (2909383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121213 + ... + 121236.

2^2909388 is an apocalyptic number.

It is an amenable number.

2909388 is an abundant number, since it is smaller than the sum of its proper divisors (3879212).

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

2909388 is a wasteful number, since it uses less digits than its factorization.

2909388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242456 (or 242454 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 2909388 is about 1705.6928211140. The cubic root of 2909388 is about 142.7580304912.

Adding to 2909388 its product of nonzero digits (31104), we get a palindrome (2940492).

The spelling of 2909388 in words is "two million, nine hundred nine thousand, three hundred eighty-eight".