213992905 has 8 divisors (see below), whose sum is σ = 293476032. Its totient is φ = 146737968.

The previous prime is 213992881. The next prime is 213992917. The reversal of 213992905 is 509299312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213992905 - 2⁵ = 213992873 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3057007 + ... + 3057076.

It is an arithmetic number, because the mean of its divisors is an integer number (36684504).

Almost surely, 2^213992905 is an apocalyptic number.

It is an amenable number.

213992905 is a deficient number, since it is larger than the sum of its proper divisors (79483127).

213992905 is an equidigital number, since it uses as much as digits as its factorization.

213992905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6114095.

The product of its (nonzero) digits is 43740, while the sum is 40.

The square root of 213992905 is about 14628.4963342102. The cubic root of 213992905 is about 598.1357925870.

The spelling of 213992905 in words is "two hundred thirteen million, nine hundred ninety-two thousand, nine hundred five".