229397445 has 24 divisors (see below), whose sum is σ = 397975032. Its totient is φ = 122236800.

The previous prime is 229397437. The next prime is 229397477. The reversal of 229397445 is 544793922.

It can be written as a sum of positive squares in 4 ways, for example, as 11716929 + 217680516 = 3423^2 + 14754^2 .

It is not a de Polignac number, because 229397445 - 2³ = 229397437 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 229397445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 95155 + ... + 97535.

It is an arithmetic number, because the mean of its divisors is an integer number (16582293).

Almost surely, 2^229397445 is an apocalyptic number.

It is an amenable number.

229397445 is a deficient number, since it is larger than the sum of its proper divisors (168577587).

229397445 is a wasteful number, since it uses less digits than its factorization.

229397445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4533 (or 4530 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 229397445 is about 15145.8722099455. The cubic root of 229397445 is about 612.1570547199.

Adding to 229397445 its sum of digits (45), we get a triangular number (229397490 = T₂₁₄₁₉).

The spelling of 229397445 in words is "two hundred twenty-nine million, three hundred ninety-seven thousand, four hundred forty-five".