234209785879 has 4 divisors (see below), whose sum is σ = 234217709640. Its totient is φ = 234201862120.

The previous prime is 234209785861. The next prime is 234209785913. The reversal of 234209785879 is 978587902432.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 234209785879 - 2¹¹ = 234209783831 is a prime.

It is a super-3 number, since 3×234209785879³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 234209785879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234209785079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3917377 + ... + 3976714.

It is an arithmetic number, because the mean of its divisors is an integer number (58554427410).

Almost surely, 2^234209785879 is an apocalyptic number.

234209785879 is a deficient number, since it is larger than the sum of its proper divisors (7923761).

234209785879 is an equidigital number, since it uses as much as digits as its factorization.

234209785879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7923760.

The product of its (nonzero) digits is 60963840, while the sum is 64.

The spelling of 234209785879 in words is "two hundred thirty-four billion, two hundred nine million, seven hundred eighty-five thousand, eight hundred seventy-nine".