40097438 has 4 divisors (see below), whose sum is σ = 60146160. Its totient is φ = 20048718.

The previous prime is 40097417. The next prime is 40097443. The reversal of 40097438 is 83479004.

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

It is a junction number, because it is equal to n+sod(n) for n = 40097398 and 40097407.

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, 10024358 + ... + 10024361.

It is an arithmetic number, because the mean of its divisors is an integer number (15036540).

Almost surely, 2^40097438 is an apocalyptic number.

40097438 is a deficient number, since it is larger than the sum of its proper divisors (20048722).

40097438 is a wasteful number, since it uses less digits than its factorization.

40097438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20048721.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 40097438 is about 6332.2537851858. The cubic root of 40097438 is about 342.2726585506.

The spelling of 40097438 in words is "forty million, ninety-seven thousand, four hundred thirty-eight".