450423434 has 4 divisors (see below), whose sum is σ = 675635154. Its totient is φ = 225211716.

The previous prime is 450423433. The next prime is 450423437. The reversal of 450423434 is 434324054.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 434324054 = 2 ⋅217162027.

It can be written as a sum of positive squares in only one way, i.e., 246019225 + 204404209 = 15685^2 + 14297^2 .

It is a junction number, because it is equal to n+sod(n) for n = 450423397 and 450423406.

It is not an unprimeable number, because it can be changed into a prime (450423431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112605857 + ... + 112605860.

Almost surely, 2^450423434 is an apocalyptic number.

450423434 is a deficient number, since it is larger than the sum of its proper divisors (225211720).

450423434 is a wasteful number, since it uses less digits than its factorization.

450423434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225211719.

The product of its (nonzero) digits is 23040, while the sum is 29.

The square root of 450423434 is about 21223.1815239846. The cubic root of 450423434 is about 766.5497136870.

Adding to 450423434 its reverse (434324054), we get a palindrome (884747488).

The spelling of 450423434 in words is "four hundred fifty million, four hundred twenty-three thousand, four hundred thirty-four".