36140439 has 4 divisors (see below), whose sum is σ = 48187256. Its totient is φ = 24093624.

The previous prime is 36140437. The next prime is 36140473. The reversal of 36140439 is 93404163.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93404163 = 3 ⋅31134721.

It is not a de Polignac number, because 36140439 - 2¹ = 36140437 is a prime.

It is a super-2 number, since 2×36140439² = 2612262662225442, 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 (36140431) 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, 6023404 + ... + 6023409.

It is an arithmetic number, because the mean of its divisors is an integer number (12046814).

Almost surely, 2^36140439 is an apocalyptic number.

36140439 is a deficient number, since it is larger than the sum of its proper divisors (12046817).

36140439 is a wasteful number, since it uses less digits than its factorization.

36140439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12046816.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 36140439 is about 6011.6918583707. The cubic root of 36140439 is about 330.6215375392.

The spelling of 36140439 in words is "thirty-six million, one hundred forty thousand, four hundred thirty-nine".