40439433 has 8 divisors (see below), whose sum is σ = 54119296. Its totient is φ = 26859600.

The previous prime is 40439431. The next prime is 40439453. The reversal of 40439433 is 33493404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40439433 - 2¹ = 40439431 is a prime.

It is a super-2 number, since 2×40439433² = 3270695482722978, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 40439433.

It is not an unprimeable number, because it can be changed into a prime (40439431) 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 in 7 ways as a sum of consecutive naturals, for example, 24058 + ... + 25683.

It is an arithmetic number, because the mean of its divisors is an integer number (6764912).

Almost surely, 2^40439433 is an apocalyptic number.

It is an amenable number.

40439433 is a deficient number, since it is larger than the sum of its proper divisors (13679863).

40439433 is a wasteful number, since it uses less digits than its factorization.

40439433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50015.

The product of its (nonzero) digits is 15552, while the sum is 30.

The square root of 40439433 is about 6359.2006573154. The cubic root of 40439433 is about 343.2429974628.

The spelling of 40439433 in words is "forty million, four hundred thirty-nine thousand, four hundred thirty-three".