3685939 has 4 divisors (see below), whose sum is σ = 3691224. Its totient is φ = 3680656.

The previous prime is 3685883. The next prime is 3685949. The reversal of 3685939 is 9395863.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9395863 = 191 ⋅49193.

It is a cyclic number.

It is not a de Polignac number, because 3685939 - 2⁷ = 3685811 is a prime.

It is a super-2 number, since 2×3685939² = 27172292623442, which contains 22 as substring.

It is a d-powerful number, because it can be written as 3¹⁰ + 6⁶ + 8⁵ + 5⁹ + 9 + 3¹³ + 9 .

It is a Duffinian number.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 3685895 and 3685904.

It is not an unprimeable number, because it can be changed into a prime (3685949) 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, 1402 + ... + 3055.

It is an arithmetic number, because the mean of its divisors is an integer number (922806).

Almost surely, 2^3685939 is an apocalyptic number.

3685939 is a deficient number, since it is larger than the sum of its proper divisors (5285).

3685939 is an equidigital number, since it uses as much as digits as its factorization.

3685939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5284.

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

The square root of 3685939 is about 1919.8799441632. The cubic root of 3685939 is about 154.4718618789.

It can be divided in two parts, 3685 and 939, that added together give a square (4624 = 68²).

The spelling of 3685939 in words is "three million, six hundred eighty-five thousand, nine hundred thirty-nine".