10400340439 has 4 divisors (see below), whose sum is σ = 10401417000. Its totient is φ = 10399263880.

The previous prime is 10400340413. The next prime is 10400340449. The reversal of 10400340439 is 93404300401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93404300401 = 60761 ⋅1537241.

It is a cyclic number.

It is not a de Polignac number, because 10400340439 - 2⁷ = 10400340311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10400340409) 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, 523657 + ... + 543154.

It is an arithmetic number, because the mean of its divisors is an integer number (2600354250).

Almost surely, 2^10400340439 is an apocalyptic number.

10400340439 is a deficient number, since it is larger than the sum of its proper divisors (1076561).

10400340439 is an equidigital number, since it uses as much as digits as its factorization.

10400340439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076560.

The product of its (nonzero) digits is 5184, while the sum is 28.

The spelling of 10400340439 in words is "ten billion, four hundred million, three hundred forty thousand, four hundred thirty-nine".