434397442 has 4 divisors (see below), whose sum is σ = 651596166. Its totient is φ = 217198720.

The previous prime is 434397433. The next prime is 434397443. The reversal of 434397442 is 244793434.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 244793434 = 2 ⋅122396717.

It can be written as a sum of positive squares in only one way, i.e., 261501241 + 172896201 = 16171^2 + 13149^2 .

It is a super-2 number, since 2×434397442² = 377402275232286728, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 434397395 and 434397404.

It is not an unprimeable number, because it can be changed into a prime (434397443) 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, 108599359 + ... + 108599362.

Almost surely, 2^434397442 is an apocalyptic number.

434397442 is a deficient number, since it is larger than the sum of its proper divisors (217198724).

434397442 is a wasteful number, since it uses less digits than its factorization.

434397442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217198723.

The product of its digits is 290304, while the sum is 40.

The square root of 434397442 is about 20842.2033863985. The cubic root of 434397442 is about 757.3484711809.

The spelling of 434397442 in words is "four hundred thirty-four million, three hundred ninety-seven thousand, four hundred forty-two".