229889961 has 16 divisors (see below), whose sum is σ = 389232000. Its totient is φ = 131365584.

The previous prime is 229889951. The next prime is 229889969. The reversal of 229889961 is 169988922.

It is not a de Polignac number, because 229889961 - 2⁶ = 229889897 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 229889898 and 229889907.

It is not an unprimeable number, because it can be changed into a prime (229889969) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 607986 + ... + 608363.

It is an arithmetic number, because the mean of its divisors is an integer number (24327000).

Almost surely, 2^229889961 is an apocalyptic number.

229889961 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

229889961 is a deficient number, since it is larger than the sum of its proper divisors (159342039).

229889961 is a wasteful number, since it uses less digits than its factorization.

229889961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1216365 (or 1216359 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 54.

The square root of 229889961 is about 15162.1225756818. The cubic root of 229889961 is about 612.5948416790.

The spelling of 229889961 in words is "two hundred twenty-nine million, eight hundred eighty-nine thousand, nine hundred sixty-one".