914821 has 4 divisors (see below), whose sum is σ = 968652. Its totient is φ = 860992.

The previous prime is 914819. The next prime is 914827. The reversal of 914821 is 128419.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 128419 = 53 ⋅2423.

It can be written as a sum of positive squares in 2 ways, for example, as 617796 + 297025 = 786^2 + 545^2 .

It is a cyclic number.

It is not a de Polignac number, because 914821 - 2¹ = 914819 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 (914827) 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, 26890 + ... + 26923.

It is an arithmetic number, because the mean of its divisors is an integer number (242163).

2⁹¹⁴⁸²¹ is an apocalyptic number.

It is an amenable number.

914821 is a deficient number, since it is larger than the sum of its proper divisors (53831).

914821 is a wasteful number, since it uses less digits than its factorization.

914821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53830.

The product of its digits is 576, while the sum is 25.

The square root of 914821 is about 956.4627541102. The cubic root of 914821 is about 97.0760377325.

The spelling of 914821 in words is "nine hundred fourteen thousand, eight hundred twenty-one".