7874939 has 2 divisors, whose sum is σ = 7874940. Its totient is φ = 7874938.

The previous prime is 7874929. The next prime is 7874959. The reversal of 7874939 is 9394787.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7874939 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 7874893 and 7874902.

It is not a weakly prime, because it can be changed into another prime (7874929) 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 as a sum of consecutive naturals, namely, 3937469 + 3937470.

It is an arithmetic number, because the mean of its divisors is an integer number (3937470).

Almost surely, 2^7874939 is an apocalyptic number.

7874939 is a deficient number, since it is larger than the sum of its proper divisors (1).

7874939 is an equidigital number, since it uses as much as digits as its factorization.

7874939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 381024, while the sum is 47.

The square root of 7874939 is about 2806.2321714356. The cubic root of 7874939 is about 198.9523466951.

The spelling of 7874939 in words is "seven million, eight hundred seventy-four thousand, nine hundred thirty-nine".