40013775 has 18 divisors (see below), whose sum is σ = 71669520. Its totient is φ = 21340560.

The previous prime is 40013773. The next prime is 40013797. The reversal of 40013775 is 57731004.

It is not a de Polignac number, because 40013775 - 2¹ = 40013773 is a prime.

It is a super-2 number, since 2×40013775² = 3202204379501250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40013773) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 88695 + ... + 89144.

It is an arithmetic number, because the mean of its divisors is an integer number (3981640).

Almost surely, 2^40013775 is an apocalyptic number.

40013775 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

40013775 is a deficient number, since it is larger than the sum of its proper divisors (31655745).

40013775 is a wasteful number, since it uses less digits than its factorization.

40013775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177855 (or 177847 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 40013775 is about 6325.6442359652. The cubic root of 40013775 is about 342.0344430275.

Adding to 40013775 its reverse (57731004), we get a palindrome (97744779).

It can be divided in two parts, 4001 and 3775, that added together give a 5-th power (7776 = 6⁵).

The spelling of 40013775 in words is "forty million, thirteen thousand, seven hundred seventy-five".