2398381 has 4 divisors (see below), whose sum is σ = 2404764. Its totient is φ = 2392000.

The previous prime is 2398379. The next prime is 2398391. The reversal of 2398381 is 1838932.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1276900 + 1121481 = 1130^2 + 1059^2 .

It is a cyclic number.

It is not a de Polignac number, because 2398381 - 2¹ = 2398379 is a prime.

It is a super-2 number, since 2×2398381² = 11504462842322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2398301) 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, 2590 + ... + 3391.

It is an arithmetic number, because the mean of its divisors is an integer number (601191).

2^2398381 is an apocalyptic number.

It is an amenable number.

2398381 is a deficient number, since it is larger than the sum of its proper divisors (6383).

2398381 is an equidigital number, since it uses as much as digits as its factorization.

2398381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6382.

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

The square root of 2398381 is about 1548.6707203276. The cubic root of 2398381 is about 133.8564773569.

The spelling of 2398381 in words is "two million, three hundred ninety-eight thousand, three hundred eighty-one".