15942849 has 16 divisors (see below), whose sum is σ = 22970304. Its totient is φ = 9777600.

The previous prime is 15942833. The next prime is 15942853. The reversal of 15942849 is 94824951.

It is not a de Polignac number, because 15942849 - 2⁴ = 15942833 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 15942849.

It is not an unprimeable number, because it can be changed into a prime (15942859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15934 + ... + 16904.

It is an arithmetic number, because the mean of its divisors is an integer number (1435644).

Almost surely, 2^15942849 is an apocalyptic number.

It is an amenable number.

15942849 is a deficient number, since it is larger than the sum of its proper divisors (7027455).

15942849 is a wasteful number, since it uses less digits than its factorization.

15942849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1408.

The product of its digits is 103680, while the sum is 42.

The square root of 15942849 is about 3992.8497342124. The cubic root of 15942849 is about 251.6838280965.

The spelling of 15942849 in words is "fifteen million, nine hundred forty-two thousand, eight hundred forty-nine".