11421397 has 8 divisors (see below), whose sum is σ = 12509280. Its totient is φ = 10363440.

The previous prime is 11421379. The next prime is 11421401. The reversal of 11421397 is 79312411.

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

It is a cyclic number.

It is not a de Polignac number, because 11421397 - 2⁷ = 11421269 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 (11421367) 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 in 7 ways as a sum of consecutive naturals, for example, 6679 + ... + 8212.

It is an arithmetic number, because the mean of its divisors is an integer number (1563660).

Almost surely, 2^11421397 is an apocalyptic number.

It is an amenable number.

11421397 is a deficient number, since it is larger than the sum of its proper divisors (1087883).

11421397 is a wasteful number, since it uses less digits than its factorization.

11421397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14963.

The product of its digits is 1512, while the sum is 28.

The square root of 11421397 is about 3379.5557400345. Note that the first 3 decimals coincide. The cubic root of 11421397 is about 225.2024318099.

The spelling of 11421397 in words is "eleven million, four hundred twenty-one thousand, three hundred ninety-seven".