33440434 has 4 divisors (see below), whose sum is σ = 50160654. Its totient is φ = 16720216.

The previous prime is 33440431. The next prime is 33440441. The reversal of 33440434 is 43404433.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43404433 = 31 ⋅1400143.

It can be written as a sum of positive squares in only one way, i.e., 33235225 + 205209 = 5765^2 + 453^2 .

It is a super-2 number, since 2×33440434² = 2236525252216712, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33440399 and 33440408.

It is not an unprimeable number, because it can be changed into a prime (33440431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8360107 + ... + 8360110.

Almost surely, 2^33440434 is an apocalyptic number.

33440434 is a deficient number, since it is larger than the sum of its proper divisors (16720220).

33440434 is a wasteful number, since it uses less digits than its factorization.

33440434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16720219.

The product of its (nonzero) digits is 6912, while the sum is 25.

The square root of 33440434 is about 5782.7704433083. The cubic root of 33440434 is about 322.1741082254.

Adding to 33440434 its reverse (43404433), we get a palindrome (76844867).

The spelling of 33440434 in words is "thirty-three million, four hundred forty thousand, four hundred thirty-four".