40127539 has 4 divisors (see below), whose sum is σ = 40256056. Its totient is φ = 39999024.

The previous prime is 40127513. The next prime is 40127629. The reversal of 40127539 is 93572104.

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

It is a cyclic number.

It is not a de Polignac number, because 40127539 - 2¹³ = 40119347 is a prime.

It is a super-2 number, since 2×40127539² = 3220438772393042, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40127539.

It is not an unprimeable number, because it can be changed into a prime (40127509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63789 + ... + 64414.

It is an arithmetic number, because the mean of its divisors is an integer number (10064014).

Almost surely, 2^40127539 is an apocalyptic number.

40127539 is a deficient number, since it is larger than the sum of its proper divisors (128517).

40127539 is a wasteful number, since it uses less digits than its factorization.

40127539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128516.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 40127539 is about 6334.6301391636. The cubic root of 40127539 is about 342.3582847386.

The spelling of 40127539 in words is "forty million, one hundred twenty-seven thousand, five hundred thirty-nine".