214140445 has 4 divisors (see below), whose sum is σ = 256968540. Its totient is φ = 171312352.

The previous prime is 214140397. The next prime is 214140457. The reversal of 214140445 is 544041412.

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

It can be written as a sum of positive squares in 2 ways, for example, as 85340644 + 128799801 = 9238^2 + 11349^2 .

It is a cyclic number.

It is not a de Polignac number, because 214140445 - 2¹⁷ = 214009373 is a prime.

It is a super-2 number, since 2×214140445² = 91712260369596050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21414040 + ... + 21414049.

It is an arithmetic number, because the mean of its divisors is an integer number (64242135).

Almost surely, 2^214140445 is an apocalyptic number.

It is an amenable number.

214140445 is a deficient number, since it is larger than the sum of its proper divisors (42828095).

214140445 is an equidigital number, since it uses as much as digits as its factorization.

214140445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42828094.

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 214140445 is about 14633.5383622691. The cubic root of 214140445 is about 598.2732249957.

Adding to 214140445 its reverse (544041412), we get a palindrome (758181857).

The spelling of 214140445 in words is "two hundred fourteen million, one hundred forty thousand, four hundred forty-five".