229665977387 has 32 divisors (see below), whose sum is σ = 293813568000. Its totient is φ = 177960199200.

The previous prime is 229665977383. The next prime is 229665977447. The reversal of 229665977387 is 783779566922.

It is a happy number.

229665977387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 229665977387 - 2² = 229665977383 is a prime.

It is a super-2 number, since 2×229665977387² (a number of 24 digits) contains 22 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 229665977387.

It is not an unprimeable number, because it can be changed into a prime (229665977381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 505337 + ... + 845397.

It is an arithmetic number, because the mean of its divisors is an integer number (9181674000).

Almost surely, 2^229665977387 is an apocalyptic number.

229665977387 is a deficient number, since it is larger than the sum of its proper divisors (64147590613).

229665977387 is a wasteful number, since it uses less digits than its factorization.

229665977387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340272 (or 340258 counting only the distinct ones).

The product of its digits is 480090240, while the sum is 71.

The spelling of 229665977387 in words is "two hundred twenty-nine billion, six hundred sixty-five million, nine hundred seventy-seven thousand, three hundred eighty-seven".