213975879 has 8 divisors (see below), whose sum is σ = 307247472. Its totient is φ = 131677440.

The previous prime is 213975851. The next prime is 213975899. The reversal of 213975879 is 978579312.

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

It is not a de Polignac number, because 213975879 - 2¹⁹ = 213451591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213975809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2743242 + ... + 2743319.

It is an arithmetic number, because the mean of its divisors is an integer number (38405934).

Almost surely, 2^213975879 is an apocalyptic number.

213975879 is a deficient number, since it is larger than the sum of its proper divisors (93271593).

213975879 is a wasteful number, since it uses less digits than its factorization.

213975879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5486577.

The product of its digits is 952560, while the sum is 51.

The square root of 213975879 is about 14627.9143762876. The cubic root of 213975879 is about 598.1199289300.

The spelling of 213975879 in words is "two hundred thirteen million, nine hundred seventy-five thousand, eight hundred seventy-nine".