3689399 has 4 divisors (see below), whose sum is σ = 4216464. Its totient is φ = 3162336.

The previous prime is 3689377. The next prime is 3689417. The reversal of 3689399 is 9939863.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9939863 = 2693 ⋅3691.

It is a cyclic number.

It is not a de Polignac number, because 3689399 - 2⁸ = 3689143 is a prime.

It is a super-2 number, since 2×3689399² = 27223329962402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3689299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263522 + ... + 263535.

It is an arithmetic number, because the mean of its divisors is an integer number (1054116).

Almost surely, 2^3689399 is an apocalyptic number.

3689399 is a deficient number, since it is larger than the sum of its proper divisors (527065).

3689399 is an equidigital number, since it uses as much as digits as its factorization.

3689399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527064.

The product of its digits is 314928, while the sum is 47.

The square root of 3689399 is about 1920.7808308081. The cubic root of 3689399 is about 154.5201811351.

The spelling of 3689399 in words is "three million, six hundred eighty-nine thousand, three hundred ninety-nine".