3663939 has 8 divisors (see below), whose sum is σ = 4923072. Its totient is φ = 2423720.

The previous prime is 3663929. The next prime is 3663949. The reversal of 3663939 is 9393663.

It is an interprime number because it is at equal distance from previous prime (3663929) and next prime (3663949).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3663939 - 2⁷ = 3663811 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3663897 and 3663906.

It is not an unprimeable number, because it can be changed into a prime (3663929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4269 + ... + 5054.

It is an arithmetic number, because the mean of its divisors is an integer number (615384).

Almost surely, 2^3663939 is an apocalyptic number.

3663939 is a deficient number, since it is larger than the sum of its proper divisors (1259133).

3663939 is a wasteful number, since it uses less digits than its factorization.

3663939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9457.

The product of its digits is 78732, while the sum is 39.

The square root of 3663939 is about 1914.1418442738. The cubic root of 3663939 is about 154.1639200225.

The spelling of 3663939 in words is "three million, six hundred sixty-three thousand, nine hundred thirty-nine".