2386639 has 2 divisors, whose sum is σ = 2386640. Its totient is φ = 2386638.

The previous prime is 2386627. The next prime is 2386661. The reversal of 2386639 is 9366832.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2386639 - 2⁹ = 2386127 is a prime.

It is a d-powerful number, because it can be written as 2¹³ + 3³ + 8⁷ + 6⁴ + 6⁷ + 3³ + 9 .

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 2386598 and 2386607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2386679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1193319 + 1193320.

It is an arithmetic number, because the mean of its divisors is an integer number (1193320).

2^2386639 is an apocalyptic number.

2386639 is a deficient number, since it is larger than the sum of its proper divisors (1).

2386639 is an equidigital number, since it uses as much as digits as its factorization.

2386639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 37.

The square root of 2386639 is about 1544.8750758556. The cubic root of 2386639 is about 133.6376749318.

It can be divided in two parts, 2386 and 639, that added together give a square (3025 = 55²).

The spelling of 2386639 in words is "two million, three hundred eighty-six thousand, six hundred thirty-nine".