2389813 has 2 divisors, whose sum is σ = 2389814. Its totient is φ = 2389812.

The previous prime is 2389799. The next prime is 2389831. The reversal of 2389813 is 3189832.

Together with next prime (2389831) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2007889 + 381924 = 1417^2 + 618^2 .

It is a cyclic number.

It is not a de Polignac number, because 2389813 - 2⁵ = 2389781 is a prime.

It is a super-2 number, since 2×2389813² = 11422412349938, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2389853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1194906 + 1194907.

It is an arithmetic number, because the mean of its divisors is an integer number (1194907).

2^2389813 is an apocalyptic number.

It is an amenable number.

2389813 is a deficient number, since it is larger than the sum of its proper divisors (1).

2389813 is an equidigital number, since it uses as much as digits as its factorization.

2389813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 34.

The square root of 2389813 is about 1545.9020020687. The cubic root of 2389813 is about 133.6968904347.

The spelling of 2389813 in words is "two million, three hundred eighty-nine thousand, eight hundred thirteen".