2009398 has 8 divisors (see below), whose sum is σ = 3055608. Its totient is φ = 990864.

The previous prime is 2009393. The next prime is 2009407. The reversal of 2009398 is 8939002.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2009393) 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, 6736 + ... + 7027.

It is an arithmetic number, because the mean of its divisors is an integer number (381951).

2^2009398 is an apocalyptic number.

2009398 is a deficient number, since it is larger than the sum of its proper divisors (1046210).

2009398 is a wasteful number, since it uses less digits than its factorization.

2009398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13838.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 2009398 is about 1417.5323629463. The cubic root of 2009398 is about 126.1891423187.

The spelling of 2009398 in words is "two million, nine thousand, three hundred ninety-eight".