40238907 has 8 divisors (see below), whose sum is σ = 54173184. Its totient is φ = 26565288.

The previous prime is 40238897. The next prime is 40238911. The reversal of 40238907 is 70983204.

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

It is not a de Polignac number, because 40238907 - 2⁶ = 40238843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40231907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64803 + ... + 65420.

It is an arithmetic number, because the mean of its divisors is an integer number (6771648).

Almost surely, 2^40238907 is an apocalyptic number.

40238907 is a deficient number, since it is larger than the sum of its proper divisors (13934277).

40238907 is a wasteful number, since it uses less digits than its factorization.

40238907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130329.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 40238907 is about 6343.4144591064. The cubic root of 40238907 is about 342.6747136388.

Adding to 40238907 its reverse (70983204), we get a palindrome (111222111).

The spelling of 40238907 in words is "forty million, two hundred thirty-eight thousand, nine hundred seven".