40238427 has 8 divisors (see below), whose sum is σ = 53683200. Its totient is φ = 26809640.

The previous prime is 40238423. The next prime is 40238437. The reversal of 40238427 is 72483204.

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

It is a cyclic number.

It is not a de Polignac number, because 40238427 - 2² = 40238423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40238394 and 40238403.

It is not an unprimeable number, because it can be changed into a prime (40238423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4402 + ... + 9992.

It is an arithmetic number, because the mean of its divisors is an integer number (6710400).

Almost surely, 2^40238427 is an apocalyptic number.

40238427 is a deficient number, since it is larger than the sum of its proper divisors (13444773).

40238427 is a wasteful number, since it uses less digits than its factorization.

40238427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7993.

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 40238427 is about 6343.3766244801. The cubic root of 40238427 is about 342.6733510727.

The spelling of 40238427 in words is "forty million, two hundred thirty-eight thousand, four hundred twenty-seven".