229681947 has 32 divisors (see below), whose sum is σ = 341397504. Its totient is φ = 136186400.

The previous prime is 229681931. The next prime is 229681981. The reversal of 229681947 is 749186922.

It is a cyclic number.

It is not a de Polignac number, because 229681947 - 2⁴ = 229681931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 229681896 and 229681905.

It is not an unprimeable number, because it can be changed into a prime (229681987) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 390988 + ... + 391574.

It is an arithmetic number, because the mean of its divisors is an integer number (10668672).

Almost surely, 2^229681947 is an apocalyptic number.

229681947 is a deficient number, since it is larger than the sum of its proper divisors (111715557).

229681947 is a wasteful number, since it uses less digits than its factorization.

229681947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839.

The product of its digits is 435456, while the sum is 48.

The square root of 229681947 is about 15155.2613636321. The cubic root of 229681947 is about 612.4100188239.

The spelling of 229681947 in words is "two hundred twenty-nine million, six hundred eighty-one thousand, nine hundred forty-seven".