434402 has 4 divisors (see below), whose sum is σ = 651606. Its totient is φ = 217200.

The previous prime is 434389. The next prime is 434407. The reversal of 434402 is 204434.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 204434 = 2 ⋅102217.

It can be written as a sum of positive squares in only one way, i.e., 434281 + 121 = 659^2 + 11^2 .

It is not an unprimeable number, because it can be changed into a prime (434407) by changing a digit.

434402 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108599 + ... + 108602.

2⁴³⁴⁴⁰² is an apocalyptic number.

434402 is a deficient number, since it is larger than the sum of its proper divisors (217204).

434402 is a wasteful number, since it uses less digits than its factorization.

434402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217203.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 434402 is about 659.0917993724. The cubic root of 434402 is about 75.7351120047.

Adding to 434402 its reverse (204434), we get a palindrome (638836).

The spelling of 434402 in words is "four hundred thirty-four thousand, four hundred two".