14439890 has 8 divisors (see below), whose sum is σ = 25991820. Its totient is φ = 5775952.

The previous prime is 14439881. The next prime is 14439917. The reversal of 14439890 is 9893441.

It can be written as a sum of positive squares in 2 ways, for example, as 13965169 + 474721 = 3737^2 + 689^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 721985 + ... + 722004.

Almost surely, 2^14439890 is an apocalyptic number.

14439890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

14439890 is a deficient number, since it is larger than the sum of its proper divisors (11551930).

14439890 is a wasteful number, since it uses less digits than its factorization.

14439890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1443996.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 14439890 is about 3799.9855262882. The cubic root of 14439890 is about 243.5125199639.

The spelling of 14439890 in words is "fourteen million, four hundred thirty-nine thousand, eight hundred ninety".