40140613 has 4 divisors (see below), whose sum is σ = 40256640. Its totient is φ = 40024588.

The previous prime is 40140601. The next prime is 40140641. The reversal of 40140613 is 31604104.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40140613 - 2⁹ = 40140101 is a prime.

It is a super-2 number, since 2×40140613² = 3222537624031538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40140643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57493 + ... + 58186.

It is an arithmetic number, because the mean of its divisors is an integer number (10064160).

Almost surely, 2^40140613 is an apocalyptic number.

It is an amenable number.

40140613 is a deficient number, since it is larger than the sum of its proper divisors (116027).

40140613 is a wasteful number, since it uses less digits than its factorization.

40140613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116026.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 40140613 is about 6335.6620017169. The cubic root of 40140613 is about 342.3954620845.

Adding to 40140613 its reverse (31604104), we get a palindrome (71744717).

It can be divided in two parts, 401 and 40613, that added together give a palindrome (41014).

The spelling of 40140613 in words is "forty million, one hundred forty thousand, six hundred thirteen".