213954289 has 4 divisors (see below), whose sum is σ = 215267056. Its totient is φ = 212641524.

The previous prime is 213954287. The next prime is 213954317. The reversal of 213954289 is 982459312.

213954289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 213954289 - 2¹ = 213954287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213954287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 656139 + ... + 656464.

It is an arithmetic number, because the mean of its divisors is an integer number (53816764).

Almost surely, 2^213954289 is an apocalyptic number.

It is an amenable number.

213954289 is a deficient number, since it is larger than the sum of its proper divisors (1312767).

213954289 is a wasteful number, since it uses less digits than its factorization.

213954289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1312766.

The product of its digits is 155520, while the sum is 43.

The square root of 213954289 is about 14627.1763850717. The cubic root of 213954289 is about 598.0998116413.

The spelling of 213954289 in words is "two hundred thirteen million, nine hundred fifty-four thousand, two hundred eighty-nine".