7914821 has 4 divisors (see below), whose sum is σ = 7952544. Its totient is φ = 7877100.

The previous prime is 7914793. The next prime is 7914853. The reversal of 7914821 is 1284197.

7914821 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 an emirpimes, since its reverse is a distinct semiprime: 1284197 = 17 ⋅75541.

It is a cyclic number.

It is not a de Polignac number, because 7914821 - 2¹⁰ = 7913797 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 (7914871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18545 + ... + 18966.

It is an arithmetic number, because the mean of its divisors is an integer number (1988136).

Almost surely, 2^7914821 is an apocalyptic number.

It is an amenable number.

7914821 is a deficient number, since it is larger than the sum of its proper divisors (37723).

7914821 is a wasteful number, since it uses less digits than its factorization.

7914821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37722.

The product of its digits is 4032, while the sum is 32.

The square root of 7914821 is about 2813.3291666636. The cubic root of 7914821 is about 199.2876407338.

The spelling of 7914821 in words is "seven million, nine hundred fourteen thousand, eight hundred twenty-one".