3658399 has 2 divisors, whose sum is σ = 3658400. Its totient is φ = 3658398.

The previous prime is 3658387. The next prime is 3658409. The reversal of 3658399 is 9938563.

It is a strong prime.

It is an emirp because it is prime and its reverse (9938563) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3658399 - 2⁹ = 3657887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3658309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1829199 + 1829200.

It is an arithmetic number, because the mean of its divisors is an integer number (1829200).

Almost surely, 2^3658399 is an apocalyptic number.

3658399 is a deficient number, since it is larger than the sum of its proper divisors (1).

3658399 is an equidigital number, since it uses as much as digits as its factorization.

3658399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 174960, while the sum is 43.

The square root of 3658399 is about 1912.6941731495. The cubic root of 3658399 is about 154.0861804696.

The spelling of 3658399 in words is "three million, six hundred fifty-eight thousand, three hundred ninety-nine".