16439145 has 16 divisors (see below), whose sum is σ = 27151872. Its totient is φ = 8484480.

The previous prime is 16439141. The next prime is 16439147. The reversal of 16439145 is 54193461.

It is not a de Polignac number, because 16439145 - 2² = 16439141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16439141) 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, 17212 + ... + 18141.

It is an arithmetic number, because the mean of its divisors is an integer number (1696992).

Almost surely, 2^16439145 is an apocalyptic number.

16439145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16439145 is a deficient number, since it is larger than the sum of its proper divisors (10712727).

16439145 is a wasteful number, since it uses less digits than its factorization.

16439145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35392.

The product of its digits is 12960, while the sum is 33.

The square root of 16439145 is about 4054.5215500722. The cubic root of 16439145 is about 254.2688011397.

The spelling of 16439145 in words is "sixteen million, four hundred thirty-nine thousand, one hundred forty-five".