214657389 has 6 divisors (see below), whose sum is σ = 310060686. Its totient is φ = 143104920.

The previous prime is 214657381. The next prime is 214657393. The reversal of 214657389 is 983756412.

214657389 is a `hidden beast` number, since 214 + 6 + 57 + 389 = 666.

It can be written as a sum of positive squares in only one way, i.e., 115992900 + 98664489 = 10770^2 + 9933^2 .

It is not a de Polignac number, because 214657389 - 2³ = 214657381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214657381) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11925402 + ... + 11925419.

It is an arithmetic number, because the mean of its divisors is an integer number (51676781).

Almost surely, 2^214657389 is an apocalyptic number.

It is an amenable number.

214657389 is a deficient number, since it is larger than the sum of its proper divisors (95403297).

214657389 is a wasteful number, since it uses less digits than its factorization.

214657389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23850827 (or 23850824 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 214657389 is about 14651.1907024651. The cubic root of 214657389 is about 598.7542569973.

The spelling of 214657389 in words is "two hundred fourteen million, six hundred fifty-seven thousand, three hundred eighty-nine".