213420394 has 8 divisors (see below), whose sum is σ = 349233408. Its totient is φ = 97009260.

The previous prime is 213420341. The next prime is 213420413. The reversal of 213420394 is 493024312.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4850442 + ... + 4850485.

It is an arithmetic number, because the mean of its divisors is an integer number (43654176).

Almost surely, 2^213420394 is an apocalyptic number.

213420394 is a deficient number, since it is larger than the sum of its proper divisors (135813014).

213420394 is a wasteful number, since it uses less digits than its factorization.

213420394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9700940.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 213420394 is about 14608.9148809896. The cubic root of 213420394 is about 597.6019039208.

The spelling of 213420394 in words is "two hundred thirteen million, four hundred twenty thousand, three hundred ninety-four".