14639940 has 120 divisors (see below), whose sum is σ = 52527552. Its totient is φ = 3343680.

The previous prime is 14639929. The next prime is 14639951. The reversal of 14639940 is 4993641.

14639940 is a `hidden beast` number, since 14 + 639 + 9 + 4 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (14639929) and next prime (14639951).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 14639895 and 14639904.

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 39 ways as a sum of consecutive naturals, for example, 10695 + ... + 11985.

Almost surely, 2^14639940 is an apocalyptic number.

14639940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 14639940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26263776).

14639940 is an abundant number, since it is smaller than the sum of its proper divisors (37887612).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

14639940 is a wasteful number, since it uses less digits than its factorization.

14639940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1319 (or 1308 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 14639940 is about 3826.2174533082. The cubic root of 14639940 is about 244.6319059411.

The spelling of 14639940 in words is "fourteen million, six hundred thirty-nine thousand, nine hundred forty".