16140949 has 4 divisors (see below), whose sum is σ = 17608320. Its totient is φ = 14673580.

The previous prime is 16140947. The next prime is 16140977. The reversal of 16140949 is 94904161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16140949 - 2¹ = 16140947 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16140947) 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 3 ways as a sum of consecutive naturals, for example, 733669 + ... + 733690.

It is an arithmetic number, because the mean of its divisors is an integer number (4402080).

Almost surely, 2^16140949 is an apocalyptic number.

It is an amenable number.

16140949 is a deficient number, since it is larger than the sum of its proper divisors (1467371).

16140949 is a wasteful number, since it uses less digits than its factorization.

16140949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467370.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 16140949 is about 4017.5799929808. The cubic root of 16140949 is about 252.7219836587.

The spelling of 16140949 in words is "sixteen million, one hundred forty thousand, nine hundred forty-nine".