229478402 has 4 divisors (see below), whose sum is σ = 344217606. Its totient is φ = 114739200.

The previous prime is 229478377. The next prime is 229478407. The reversal of 229478402 is 204874922.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 184172041 + 45306361 = 13571^2 + 6731^2 .

It is not an unprimeable number, because it can be changed into a prime (229478407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57369599 + ... + 57369602.

Almost surely, 2^229478402 is an apocalyptic number.

229478402 is a deficient number, since it is larger than the sum of its proper divisors (114739204).

229478402 is a wasteful number, since it uses less digits than its factorization.

229478402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114739203.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 229478402 is about 15148.5445505501. The cubic root of 229478402 is about 612.2290586749.

The spelling of 229478402 in words is "two hundred twenty-nine million, four hundred seventy-eight thousand, four hundred two".