214404977 has 2 divisors, whose sum is σ = 214404978. Its totient is φ = 214404976.

The previous prime is 214404941. The next prime is 214404979. The reversal of 214404977 is 779404412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199628641 + 14776336 = 14129^2 + 3844^2 .

It is a cyclic number.

It is not a de Polignac number, because 214404977 - 2⁶ = 214404913 is a prime.

Together with 214404979, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 214404977.

It is not a weakly prime, because it can be changed into another prime (214404979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107202488 + 107202489.

It is an arithmetic number, because the mean of its divisors is an integer number (107202489).

Almost surely, 2^214404977 is an apocalyptic number.

It is an amenable number.

214404977 is a deficient number, since it is larger than the sum of its proper divisors (1).

214404977 is an equidigital number, since it uses as much as digits as its factorization.

214404977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 214404977 is about 14642.5741247910. The cubic root of 214404977 is about 598.5194766075.

The spelling of 214404977 in words is "two hundred fourteen million, four hundred four thousand, nine hundred seventy-seven".