40240438 has 8 divisors (see below), whose sum is σ = 68983632. Its totient is φ = 17245896.

The previous prime is 40240433. The next prime is 40240441. The reversal of 40240438 is 83404204.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40240433) 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 3 ways as a sum of consecutive naturals, for example, 1437145 + ... + 1437172.

It is an arithmetic number, because the mean of its divisors is an integer number (8622954).

Almost surely, 2^40240438 is an apocalyptic number.

40240438 is a deficient number, since it is larger than the sum of its proper divisors (28743194).

40240438 is a wasteful number, since it uses less digits than its factorization.

40240438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2874326.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 40240438 is about 6343.5351342922. The cubic root of 40240438 is about 342.6790595847.

The spelling of 40240438 in words is "forty million, two hundred forty thousand, four hundred thirty-eight".