16379985 has 16 divisors (see below), whose sum is σ = 26300736. Its totient is φ = 8705088.

The previous prime is 16379963. The next prime is 16379989. The reversal of 16379985 is 58997361.

It is not a de Polignac number, because 16379985 - 2⁵ = 16379953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16379989) 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 15 ways as a sum of consecutive naturals, for example, 2827 + ... + 6383.

It is an arithmetic number, because the mean of its divisors is an integer number (1643796).

Almost surely, 2^16379985 is an apocalyptic number.

16379985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16379985 is a deficient number, since it is larger than the sum of its proper divisors (9920751).

16379985 is a wasteful number, since it uses less digits than its factorization.

16379985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3872.

The product of its digits is 408240, while the sum is 48.

The square root of 16379985 is about 4047.2194158459. The cubic root of 16379985 is about 253.9634198256.

The spelling of 16379985 in words is "sixteen million, three hundred seventy-nine thousand, nine hundred eighty-five".