2308993 has 4 divisors (see below), whose sum is σ = 2409408. Its totient is φ = 2208580.

The previous prime is 2308967. The next prime is 2309003. The reversal of 2308993 is 3998032.

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 a de Polignac number, because none of the positive numbers 2^k-2308993 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2308903) 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, 50173 + ... + 50218.

It is an arithmetic number, because the mean of its divisors is an integer number (602352).

2^2308993 is an apocalyptic number.

2308993 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2308993 is a deficient number, since it is larger than the sum of its proper divisors (100415).

2308993 is a wasteful number, since it uses less digits than its factorization.

2308993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100414.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 2308993 is about 1519.5371005671. The cubic root of 2308993 is about 132.1724292368.

The spelling of 2308993 in words is "two million, three hundred eight thousand, nine hundred ninety-three".