40005375 has 16 divisors (see below), whose sum is σ = 66569568. Its totient is φ = 21336000.

The previous prime is 40005373. The next prime is 40005377. The reversal of 40005375 is 57350004.

It is an interprime number because it is at equal distance from previous prime (40005373) and next prime (40005377).

It is not a de Polignac number, because 40005375 - 2¹ = 40005373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40005373) 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 15 ways as a sum of consecutive naturals, for example, 52966 + ... + 53715.

It is an arithmetic number, because the mean of its divisors is an integer number (4160598).

Almost surely, 2^40005375 is an apocalyptic number.

40005375 is a deficient number, since it is larger than the sum of its proper divisors (26564193).

40005375 is a wasteful number, since it uses less digits than its factorization.

40005375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106699 (or 106689 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 24.

The square root of 40005375 is about 6324.9802371233. The cubic root of 40005375 is about 342.0105071838.

Adding to 40005375 its reverse (57350004), we get a palindrome (97355379).

The spelling of 40005375 in words is "forty million, five thousand, three hundred seventy-five".