440642133 has 16 divisors (see below), whose sum is σ = 653126400. Its totient is φ = 293616000.

The previous prime is 440642131. The next prime is 440642197. The reversal of 440642133 is 331246044.

440642133 is a `hidden beast` number, since 4 + 4 + 0 + 642 + 13 + 3 = 666.

It is not a de Polignac number, because 440642133 - 2¹ = 440642131 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 440642097 and 440642106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440642131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105988 + ... + 110066.

It is an arithmetic number, because the mean of its divisors is an integer number (40820400).

Almost surely, 2^440642133 is an apocalyptic number.

It is an amenable number.

440642133 is a deficient number, since it is larger than the sum of its proper divisors (212484267).

440642133 is a wasteful number, since it uses less digits than its factorization.

440642133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8089 (or 8083 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 440642133 is about 20991.4776278374. The cubic root of 440642133 is about 760.9603124990.

Adding to 440642133 its reverse (331246044), we get a palindrome (771888177).

The spelling of 440642133 in words is "four hundred forty million, six hundred forty-two thousand, one hundred thirty-three".