2399091 has 8 divisors (see below), whose sum is σ = 3387024. Its totient is φ = 1505280.

The previous prime is 2399087. The next prime is 2399093. The reversal of 2399091 is 1909932.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2399091 - 2² = 2399087 is a prime.

2399091 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2399093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23470 + ... + 23571.

It is an arithmetic number, because the mean of its divisors is an integer number (423378).

2^2399091 is an apocalyptic number.

2399091 is a deficient number, since it is larger than the sum of its proper divisors (987933).

2399091 is a wasteful number, since it uses less digits than its factorization.

2399091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47061.

The product of its (nonzero) digits is 4374, while the sum is 33.

The square root of 2399091 is about 1548.8999322100. The cubic root of 2399091 is about 133.8696847000.

The spelling of 2399091 in words is "two million, three hundred ninety-nine thousand, ninety-one".