40523393 has 8 divisors (see below), whose sum is σ = 43325568. Its totient is φ = 37767744.

The previous prime is 40523387. The next prime is 40523419. The reversal of 40523393 is 39332504.

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

It is not a de Polignac number, because 40523393 - 2⁴ = 40523377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40523363) 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, 9821 + ... + 13322.

It is an arithmetic number, because the mean of its divisors is an integer number (5415696).

Almost surely, 2^40523393 is an apocalyptic number.

It is an amenable number.

40523393 is a deficient number, since it is larger than the sum of its proper divisors (2802175).

40523393 is a wasteful number, since it uses less digits than its factorization.

40523393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23263.

The product of its (nonzero) digits is 9720, while the sum is 29.

The square root of 40523393 is about 6365.7986930157. The cubic root of 40523393 is about 343.4803792998.

Adding to 40523393 its reverse (39332504), we get a palindrome (79855897).

The spelling of 40523393 in words is "forty million, five hundred twenty-three thousand, three hundred ninety-three".