340440039 has 6 divisors (see below), whose sum is σ = 491746736. Its totient is φ = 226960020.

The previous prime is 340440017. The next prime is 340440083. The reversal of 340440039 is 930044043.

It is not a de Polignac number, because 340440039 - 2⁸ = 340439783 is a prime.

It is a super-3 number, since 3×340440039³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 340439994 and 340440021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340440439) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18913327 + ... + 18913344.

Almost surely, 2^340440039 is an apocalyptic number.

340440039 is a deficient number, since it is larger than the sum of its proper divisors (151306697).

340440039 is a wasteful number, since it uses less digits than its factorization.

340440039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37826677 (or 37826674 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 340440039 is about 18451.0172890277. The cubic root of 340440039 is about 698.2541794239.

The spelling of 340440039 in words is "three hundred forty million, four hundred forty thousand, thirty-nine".