7893942 has 16 divisors (see below), whose sum is σ = 18043392. Its totient is φ = 2255400.

The previous prime is 7893883. The next prime is 7893943. The reversal of 7893942 is 2493987.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 187951 = 7893942 / (7 + 8 + 9 + 3 + 9 + 4 + 2).

It is a d-powerful number, because it can be written as 7⁸ + 8⁷ + 9 + 3⁹ + 9 + 4⁶ + 2¹³ .

It is a junction number, because it is equal to n+sod(n) for n = 7893894 and 7893903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7893943) 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, 93934 + ... + 94017.

It is an arithmetic number, because the mean of its divisors is an integer number (1127712).

Almost surely, 2^7893942 is an apocalyptic number.

7893942 is an abundant number, since it is smaller than the sum of its proper divisors (10149450).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7893942 is a wasteful number, since it uses less digits than its factorization.

7893942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187963.

The product of its digits is 108864, while the sum is 42.

The square root of 7893942 is about 2809.6159879955. The cubic root of 7893942 is about 199.1122486514.

It can be divided in two parts, 789394 and 2, that added together give a triangular number (789396 = T₁₂₅₆).

The spelling of 7893942 in words is "seven million, eight hundred ninety-three thousand, nine hundred forty-two".