14439640 has 32 divisors (see below), whose sum is σ = 32600880. Its totient is φ = 5756032.

The previous prime is 14439617. The next prime is 14439641. The reversal of 14439640 is 4693441.

14439640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14439641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18294 + ... + 19066.

Almost surely, 2^14439640 is an apocalyptic number.

14439640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14439640 is an abundant number, since it is smaller than the sum of its proper divisors (18161240).

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

14439640 is a wasteful number, since it uses less digits than its factorization.

14439640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1251 (or 1247 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 14439640 is about 3799.9526312837. The cubic root of 14439640 is about 243.5111146328.

The spelling of 14439640 in words is "fourteen million, four hundred thirty-nine thousand, six hundred forty".