40239433 has 4 divisors (see below), whose sum is σ = 43334788. Its totient is φ = 37144080.

The previous prime is 40239427. The next prime is 40239439. The reversal of 40239433 is 33493204.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (40239427) and next prime (40239439).

It can be written as a sum of positive squares in 2 ways, for example, as 20097289 + 20142144 = 4483^2 + 4488^2 .

It is a cyclic number.

It is not a de Polignac number, because 40239433 - 2¹⁷ = 40108361 is a prime.

It is a super-2 number, since 2×40239433² = 3238423936322978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40239439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1547658 + ... + 1547683.

It is an arithmetic number, because the mean of its divisors is an integer number (10833697).

Almost surely, 2^40239433 is an apocalyptic number.

It is an amenable number.

40239433 is a deficient number, since it is larger than the sum of its proper divisors (3095355).

40239433 is a wasteful number, since it uses less digits than its factorization.

40239433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3095354.

The product of its (nonzero) digits is 7776, while the sum is 28.

The square root of 40239433 is about 6343.4559192919. The cubic root of 40239433 is about 342.6762067718.

It can be divided in two parts, 4023 and 9433, that added together give a square (13456 = 116²).

The spelling of 40239433 in words is "forty million, two hundred thirty-nine thousand, four hundred thirty-three".