214987979 has 2 divisors, whose sum is σ = 214987980. Its totient is φ = 214987978.

The previous prime is 214987963. The next prime is 214988009. The reversal of 214987979 is 979789412.

214987979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 214987979 - 2⁴ = 214987963 is a prime.

It is a super-2 number, since 2×214987979² = 92439662229008882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (214987919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107493989 + 107493990.

It is an arithmetic number, because the mean of its divisors is an integer number (107493990).

Almost surely, 2^214987979 is an apocalyptic number.

214987979 is a deficient number, since it is larger than the sum of its proper divisors (1).

214987979 is an equidigital number, since it uses as much as digits as its factorization.

214987979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2286144, while the sum is 56.

The square root of 214987979 is about 14662.4683801876. The cubic root of 214987979 is about 599.0614762392.

The spelling of 214987979 in words is "two hundred fourteen million, nine hundred eighty-seven thousand, nine hundred seventy-nine".