434023402 has 4 divisors (see below), whose sum is σ = 651035106. Its totient is φ = 217011700.

The previous prime is 434023397. The next prime is 434023453. The reversal of 434023402 is 204320434.

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., 274531761 + 159491641 = 16569^2 + 12629^2 .

It is a Smith number, since the sum of its digits (22) 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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108505849 + ... + 108505852.

Almost surely, 2^434023402 is an apocalyptic number.

434023402 is a deficient number, since it is larger than the sum of its proper divisors (217011704).

434023402 is a wasteful number, since it uses less digits than its factorization.

434023402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217011703.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 434023402 is about 20833.2283144020. The cubic root of 434023402 is about 757.1310359171.

Adding to 434023402 its reverse (204320434), we get a palindrome (638343836).

The spelling of 434023402 in words is "four hundred thirty-four million, twenty-three thousand, four hundred two".