213420879 has 16 divisors (see below), whose sum is σ = 361347840. Its totient is φ = 121954680.

The previous prime is 213420871. The next prime is 213420919. The reversal of 213420879 is 978024312.

It is not a de Polignac number, because 213420879 - 2³ = 213420871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213420871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 564417 + ... + 564794.

It is an arithmetic number, because the mean of its divisors is an integer number (22584240).

Almost surely, 2^213420879 is an apocalyptic number.

213420879 is a deficient number, since it is larger than the sum of its proper divisors (147926961).

213420879 is a wasteful number, since it uses less digits than its factorization.

213420879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1129227 (or 1129221 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 213420879 is about 14608.9314804335. The cubic root of 213420879 is about 597.6023566059.

The spelling of 213420879 in words is "two hundred thirteen million, four hundred twenty thousand, eight hundred seventy-nine".