213889473 has 12 divisors (see below), whose sum is σ = 353087488. Its totient is φ = 122222520.

The previous prime is 213889457. The next prime is 213889483. The reversal of 213889473 is 374988312.

It is not a de Polignac number, because 213889473 - 2⁴ = 213889457 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (213889453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1697473 + ... + 1697598.

Almost surely, 2^213889473 is an apocalyptic number.

It is an amenable number.

213889473 is a deficient number, since it is larger than the sum of its proper divisors (139198015).

213889473 is a wasteful number, since it uses less digits than its factorization.

213889473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3395084 (or 3395081 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 213889473 is about 14624.9606153316. The cubic root of 213889473 is about 598.0394087816.

The spelling of 213889473 in words is "two hundred thirteen million, eight hundred eighty-nine thousand, four hundred seventy-three".