14639890 has 16 divisors (see below), whose sum is σ = 27902232. Its totient is φ = 5511424.

The previous prime is 14639881. The next prime is 14639893. The reversal of 14639890 is 9893641.

It can be written as a sum of positive squares in 4 ways, for example, as 8543929 + 6095961 = 2923^2 + 2469^2 .

It is not an unprimeable number, because it can be changed into a prime (14639893) 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, 42889 + ... + 43228.

Almost surely, 2^14639890 is an apocalyptic number.

14639890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

14639890 is a deficient number, since it is larger than the sum of its proper divisors (13262342).

14639890 is a wasteful number, since it uses less digits than its factorization.

14639890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86141.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 14639890 is about 3826.2109194345. The cubic root of 14639890 is about 244.6316274425.

The spelling of 14639890 in words is "fourteen million, six hundred thirty-nine thousand, eight hundred ninety".