229020394 has 4 divisors (see below), whose sum is σ = 343530594. Its totient is φ = 114510196.

The previous prime is 229020373. The next prime is 229020401. The reversal of 229020394 is 493020922.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 493020922 = 2 ⋅246510461.

It can be written as a sum of positive squares in only one way, i.e., 175218169 + 53802225 = 13237^2 + 7335^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57255097 + ... + 57255100.

Almost surely, 2^229020394 is an apocalyptic number.

229020394 is a deficient number, since it is larger than the sum of its proper divisors (114510200).

229020394 is a wasteful number, since it uses less digits than its factorization.

229020394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114510199.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 229020394 is about 15133.4197721467. The cubic root of 229020394 is about 611.8214784667.

The spelling of 229020394 in words is "two hundred twenty-nine million, twenty thousand, three hundred ninety-four".