2403289 has 4 divisors (see below), whose sum is σ = 2746624. Its totient is φ = 2059956.

The previous prime is 2403287. The next prime is 2403301. The reversal of 2403289 is 9823042.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2403289 - 2¹ = 2403287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2403281) 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, 171657 + ... + 171670.

It is an arithmetic number, because the mean of its divisors is an integer number (686656).

2^2403289 is an apocalyptic number.

It is an amenable number.

2403289 is a deficient number, since it is larger than the sum of its proper divisors (343335).

2403289 is an equidigital number, since it uses as much as digits as its factorization.

2403289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343334.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 2403289 is about 1550.2544952362. The cubic root of 2403289 is about 133.9477222375.

The spelling of 2403289 in words is "two million, four hundred three thousand, two hundred eighty-nine".