14989821 has 16 divisors (see below), whose sum is σ = 24918528. Its totient is φ = 7786800.

The previous prime is 14989811. The next prime is 14989853. The reversal of 14989821 is 12898941.

It is not a de Polignac number, because 14989821 - 2¹⁰ = 14988797 is a prime.

It is a super-2 number, since 2×14989821² = 449389467224082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14989811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32215 + ... + 32676.

It is an arithmetic number, because the mean of its divisors is an integer number (1557408).

Almost surely, 2^14989821 is an apocalyptic number.

14989821 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

14989821 is a deficient number, since it is larger than the sum of its proper divisors (9928707).

14989821 is a wasteful number, since it uses less digits than its factorization.

14989821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64912.

The product of its digits is 41472, while the sum is 42.

The square root of 14989821 is about 3871.6690199448. The cubic root of 14989821 is about 246.5654090924.

The spelling of 14989821 in words is "fourteen million, nine hundred eighty-nine thousand, eight hundred twenty-one".