40065493 has 8 divisors (see below), whose sum is σ = 43197336. Its totient is φ = 36940800.

The previous prime is 40065491. The next prime is 40065503. The reversal of 40065493 is 39456004.

It can be written as a sum of positive squares in 4 ways, for example, as 400689 + 39664804 = 633^2 + 6298^2 .

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

It is not a de Polignac number, because 40065493 - 2¹ = 40065491 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40065491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18213 + ... + 20293.

It is an arithmetic number, because the mean of its divisors is an integer number (5399667).

Almost surely, 2^40065493 is an apocalyptic number.

It is an amenable number.

40065493 is a deficient number, since it is larger than the sum of its proper divisors (3131843).

40065493 is a wasteful number, since it uses less digits than its factorization.

40065493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3575.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 40065493 is about 6329.7308789553. The cubic root of 40065493 is about 342.1817399821.

The spelling of 40065493 in words is "forty million, sixty-five thousand, four hundred ninety-three".