3993139 has 4 divisors (see below), whose sum is σ = 4022424. Its totient is φ = 3963856.

The previous prime is 3993127. The next prime is 3993161. The reversal of 3993139 is 9313993.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3993139 - 2⁵ = 3993107 is a prime.

It is a Duffinian number.

3993139 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3993098 and 3993107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3993239) 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, 14437 + ... + 14710.

It is an arithmetic number, because the mean of its divisors is an integer number (1005606).

Almost surely, 2^3993139 is an apocalyptic number.

3993139 is a deficient number, since it is larger than the sum of its proper divisors (29285).

3993139 is a wasteful number, since it uses less digits than its factorization.

3993139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29284.

The product of its digits is 19683, while the sum is 37.

The square root of 3993139 is about 1998.2840138479. The cubic root of 3993139 is about 158.6492936003.

The spelling of 3993139 in words is "three million, nine hundred ninety-three thousand, one hundred thirty-nine".