40511493 has 24 divisors (see below), whose sum is σ = 67594176. Its totient is φ = 23107200.

The previous prime is 40511479. The next prime is 40511501. The reversal of 40511493 is 39411504.

It is not a de Polignac number, because 40511493 - 2¹⁴ = 40495109 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40511453) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10353 + ... + 13718.

It is an arithmetic number, because the mean of its divisors is an integer number (2816424).

Almost surely, 2^40511493 is an apocalyptic number.

It is an amenable number.

40511493 is a deficient number, since it is larger than the sum of its proper divisors (27082683).

40511493 is a wasteful number, since it uses less digits than its factorization.

40511493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24105 (or 24102 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 40511493 is about 6364.8639419865. The cubic root of 40511493 is about 343.4467541401.

Adding to 40511493 its reverse (39411504), we get a palindrome (79922997).

The spelling of 40511493 in words is "forty million, five hundred eleven thousand, four hundred ninety-three".