3942893 has 4 divisors (see below), whose sum is σ = 3947328. Its totient is φ = 3938460.

The previous prime is 3942889. The next prime is 3942907. The reversal of 3942893 is 3982493.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 3942893 - 2² = 3942889 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3942293) 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, 371 + ... + 2832.

It is an arithmetic number, because the mean of its divisors is an integer number (986832).

Almost surely, 2^3942893 is an apocalyptic number.

It is an amenable number.

3942893 is a deficient number, since it is larger than the sum of its proper divisors (4435).

3942893 is a wasteful number, since it uses less digits than its factorization.

3942893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4434.

The product of its digits is 46656, while the sum is 38.

The square root of 3942893 is about 1985.6719265780. The cubic root of 3942893 is about 157.9810504433.

The spelling of 3942893 in words is "three million, nine hundred forty-two thousand, eight hundred ninety-three".