13981961 has 8 divisors (see below), whose sum is σ = 16495104. Its totient is φ = 11597760.

The previous prime is 13981951. The next prime is 13981969. The reversal of 13981961 is 16918931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13981961 - 2⁶ = 13981897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13981969) 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 7 ways as a sum of consecutive naturals, for example, 32000 + ... + 32433.

It is an arithmetic number, because the mean of its divisors is an integer number (2061888).

Almost surely, 2^13981961 is an apocalyptic number.

It is an amenable number.

13981961 is a deficient number, since it is larger than the sum of its proper divisors (2513143).

13981961 is an equidigital number, since it uses as much as digits as its factorization.

13981961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64471.

The product of its digits is 11664, while the sum is 38.

The square root of 13981961 is about 3739.2460469993. The cubic root of 13981961 is about 240.9106663155.

The spelling of 13981961 in words is "thirteen million, nine hundred eighty-one thousand, nine hundred sixty-one".