214788971 has 4 divisors (see below), whose sum is σ = 214846632. Its totient is φ = 214731312.

The previous prime is 214788967. The next prime is 214788979. The reversal of 214788971 is 179887412.

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 214788971 - 2² = 214788967 is a prime.

It is a super-2 number, since 2×214788971² = 92268604126477682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (214788979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22826 + ... + 30831.

It is an arithmetic number, because the mean of its divisors is an integer number (53711658).

Almost surely, 2^214788971 is an apocalyptic number.

214788971 is a deficient number, since it is larger than the sum of its proper divisors (57661).

214788971 is an equidigital number, since it uses as much as digits as its factorization.

214788971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57660.

The product of its digits is 225792, while the sum is 47.

The square root of 214788971 is about 14655.6805027948. The cubic root of 214788971 is about 598.8765746906.

The spelling of 214788971 in words is "two hundred fourteen million, seven hundred eighty-eight thousand, nine hundred seventy-one".