3129393 has 4 divisors (see below), whose sum is σ = 4172528. Its totient is φ = 2086260.

The previous prime is 3129391. The next prime is 3129421. The reversal of 3129393 is 3939213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 3129393 - 2¹ = 3129391 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3129393.

It is not an unprimeable number, because it can be changed into a prime (3129391) 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, 521563 + ... + 521568.

It is an arithmetic number, because the mean of its divisors is an integer number (1043132).

Almost surely, 2^3129393 is an apocalyptic number.

It is an amenable number.

3129393 is a deficient number, since it is larger than the sum of its proper divisors (1043135).

3129393 is a wasteful number, since it uses less digits than its factorization.

3129393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043134.

The product of its digits is 4374, while the sum is 30.

The square root of 3129393 is about 1769.0090446349. The cubic root of 3129393 is about 146.2693626201.

The spelling of 3129393 in words is "three million, one hundred twenty-nine thousand, three hundred ninety-three".