8797821 has 8 divisors (see below), whose sum is σ = 12016704. Its totient is φ = 5722080.

The previous prime is 8797787. The next prime is 8797849. The reversal of 8797821 is 1287978.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8797821 - 2¹⁸ = 8535677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8797871) 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, 35641 + ... + 35886.

It is an arithmetic number, because the mean of its divisors is an integer number (1502088).

Almost surely, 2^8797821 is an apocalyptic number.

It is an amenable number.

8797821 is a deficient number, since it is larger than the sum of its proper divisors (3218883).

8797821 is a wasteful number, since it uses less digits than its factorization.

8797821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71571.

The product of its digits is 56448, while the sum is 42.

The square root of 8797821 is about 2966.1121017251. The cubic root of 8797821 is about 206.4389812424.

The spelling of 8797821 in words is "eight million, seven hundred ninety-seven thousand, eight hundred twenty-one".