213879489 has 8 divisors (see below), whose sum is σ = 285499872. Its totient is φ = 142422720.

The previous prime is 213879467. The next prime is 213879503. The reversal of 213879489 is 984978312.

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

It is not a de Polignac number, because 213879489 - 2⁷ = 213879361 is a prime.

It is a super-2 number, since 2×213879489² = 91488871629802242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213879689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37819 + ... + 43104.

It is an arithmetic number, because the mean of its divisors is an integer number (35687484).

Almost surely, 2^213879489 is an apocalyptic number.

It is an amenable number.

213879489 is a deficient number, since it is larger than the sum of its proper divisors (71620383).

213879489 is an equidigital number, since it uses as much as digits as its factorization.

213879489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81807.

The product of its digits is 870912, while the sum is 51.

The square root of 213879489 is about 14624.6192770957. The cubic root of 213879489 is about 598.0301034797.

It can be divided in two parts, 21387 and 9489, that added together give a triangular number (30876 = T₂₄₈).

The spelling of 213879489 in words is "two hundred thirteen million, eight hundred seventy-nine thousand, four hundred eighty-nine".