214649999 has 4 divisors (see below), whose sum is σ = 215414160. Its totient is φ = 213885840.

The previous prime is 214649993. The next prime is 214650001. The reversal of 214649999 is 999946412.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 214649999 - 2¹² = 214645903 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 214649999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214649993) 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, 381659 + ... + 382220.

It is an arithmetic number, because the mean of its divisors is an integer number (53853540).

Almost surely, 2^214649999 is an apocalyptic number.

214649999 is a deficient number, since it is larger than the sum of its proper divisors (764161).

214649999 is an equidigital number, since it uses as much as digits as its factorization.

214649999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764160.

The product of its digits is 1259712, while the sum is 53.

The square root of 214649999 is about 14650.9385023622. The cubic root of 214649999 is about 598.7473858234.

The spelling of 214649999 in words is "two hundred fourteen million, six hundred forty-nine thousand, nine hundred ninety-nine".