229312639 has 4 divisors (see below), whose sum is σ = 230851800. Its totient is φ = 227773480.

The previous prime is 229312607. The next prime is 229312651. The reversal of 229312639 is 936213922.

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 229312639 - 2⁵ = 229312607 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 229312598 and 229312607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229312669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 769357 + ... + 769654.

It is an arithmetic number, because the mean of its divisors is an integer number (57712950).

Almost surely, 2^229312639 is an apocalyptic number.

229312639 is a deficient number, since it is larger than the sum of its proper divisors (1539161).

229312639 is a wasteful number, since it uses less digits than its factorization.

229312639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1539160.

The product of its digits is 34992, while the sum is 37.

The square root of 229312639 is about 15143.0723104659. The cubic root of 229312639 is about 612.0816092560.

The spelling of 229312639 in words is "two hundred twenty-nine million, three hundred twelve thousand, six hundred thirty-nine".