214428947 has 2 divisors, whose sum is σ = 214428948. Its totient is φ = 214428946.

The previous prime is 214428943. The next prime is 214429001. The reversal of 214428947 is 749824412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 214428947 - 2² = 214428943 is a prime.

It is not a weakly prime, because it can be changed into another prime (214428943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107214473 + 107214474.

It is an arithmetic number, because the mean of its divisors is an integer number (107214474).

Almost surely, 2^214428947 is an apocalyptic number.

214428947 is a deficient number, since it is larger than the sum of its proper divisors (1).

214428947 is an equidigital number, since it uses as much as digits as its factorization.

214428947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129024, while the sum is 41.

The square root of 214428947 is about 14643.3926055406. The cubic root of 214428947 is about 598.5417801589.

The spelling of 214428947 in words is "two hundred fourteen million, four hundred twenty-eight thousand, nine hundred forty-seven".