214406399 has 4 divisors (see below), whose sum is σ = 217921320. Its totient is φ = 210891480.

The previous prime is 214406383. The next prime is 214406407. The reversal of 214406399 is 993604412.

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 214406399 - 2⁴ = 214406383 is a prime.

It is a super-3 number, since 3×214406399³ (a number of 26 digits) contains 333 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 (214400399) 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, 1757369 + ... + 1757490.

It is an arithmetic number, because the mean of its divisors is an integer number (54480330).

Almost surely, 2^214406399 is an apocalyptic number.

214406399 is a deficient number, since it is larger than the sum of its proper divisors (3514921).

214406399 is an equidigital number, since it uses as much as digits as its factorization.

214406399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3514920.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 214406399 is about 14642.6226817466. The cubic root of 214406399 is about 598.5207997932.

The spelling of 214406399 in words is "two hundred fourteen million, four hundred six thousand, three hundred ninety-nine".