14601991 has 4 divisors (see below), whose sum is σ = 14618800. Its totient is φ = 14585184.

The previous prime is 14601989. The next prime is 14602009. The reversal of 14601991 is 19910641.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19910641 = 271 ⋅73471.

It is a cyclic number.

It is not a de Polignac number, because 14601991 - 2¹ = 14601989 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 (14601091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7026 + ... + 8863.

It is an arithmetic number, because the mean of its divisors is an integer number (3654700).

Almost surely, 2^14601991 is an apocalyptic number.

14601991 is a deficient number, since it is larger than the sum of its proper divisors (16809).

14601991 is an equidigital number, since it uses as much as digits as its factorization.

14601991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16808.

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 14601991 is about 3821.2551602844. The cubic root of 14601991 is about 244.4203483977.

The spelling of 14601991 in words is "fourteen million, six hundred one thousand, nine hundred ninety-one".