40339438 has 4 divisors (see below), whose sum is σ = 60509160. Its totient is φ = 20169718.

The previous prime is 40339393. The next prime is 40339441. The reversal of 40339438 is 83493304.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10084858 + ... + 10084861.

It is an arithmetic number, because the mean of its divisors is an integer number (15127290).

Almost surely, 2^40339438 is an apocalyptic number.

40339438 is a deficient number, since it is larger than the sum of its proper divisors (20169722).

40339438 is a wasteful number, since it uses less digits than its factorization.

40339438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20169721.

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 40339438 is about 6351.3335607571. Note that the first 3 decimals coincide. The cubic root of 40339438 is about 342.9598504629.

The spelling of 40339438 in words is "forty million, three hundred thirty-nine thousand, four hundred thirty-eight".