15940983 has 4 divisors (see below), whose sum is σ = 21254648. Its totient is φ = 10627320.

The previous prime is 15940973. The next prime is 15940993. The reversal of 15940983 is 38904951.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (15940973) and next prime (15940993).

It is not a de Polignac number, because 15940983 - 2⁹ = 15940471 is a prime.

It is a super-2 number, since 2×15940983² = 508229878012578, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15940933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2656828 + ... + 2656833.

It is an arithmetic number, because the mean of its divisors is an integer number (5313662).

Almost surely, 2^15940983 is an apocalyptic number.

15940983 is a deficient number, since it is larger than the sum of its proper divisors (5313665).

15940983 is an equidigital number, since it uses as much as digits as its factorization.

15940983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5313664.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 15940983 is about 3992.6160596782. The cubic root of 15940983 is about 251.6740084307.

The spelling of 15940983 in words is "fifteen million, nine hundred forty thousand, nine hundred eighty-three".