11798421 has 8 divisors (see below), whose sum is σ = 15799680. Its totient is φ = 7831392.

The previous prime is 11798417. The next prime is 11798431. The reversal of 11798421 is 12489711.

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

It is not a de Polignac number, because 11798421 - 2² = 11798417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11798431) 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 7 ways as a sum of consecutive naturals, for example, 7741 + ... + 9138.

It is an arithmetic number, because the mean of its divisors is an integer number (1974960).

Almost surely, 2^11798421 is an apocalyptic number.

It is an amenable number.

11798421 is a deficient number, since it is larger than the sum of its proper divisors (4001259).

11798421 is a wasteful number, since it uses less digits than its factorization.

11798421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17115.

The product of its digits is 4032, while the sum is 33.

The square root of 11798421 is about 3434.8829674386. The cubic root of 11798421 is about 227.6536562083.

The spelling of 11798421 in words is "eleven million, seven hundred ninety-eight thousand, four hundred twenty-one".