340405039 has 6 divisors (see below), whose sum is σ = 368604456. Its totient is φ = 314219880.

The previous prime is 340405031. The next prime is 340405057. The reversal of 340405039 is 930504043.

It is not a de Polignac number, because 340405039 - 2³ = 340405031 is a prime.

It is a super-3 number, since 3×340405039³ (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 = 340404998 and 340405016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340405031) 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, 1006947 + ... + 1007284.

It is an arithmetic number, because the mean of its divisors is an integer number (61434076).

Almost surely, 2^340405039 is an apocalyptic number.

340405039 is a deficient number, since it is larger than the sum of its proper divisors (28199417).

340405039 is a wasteful number, since it uses less digits than its factorization.

340405039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2014257 (or 2014244 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 340405039 is about 18450.0688074598. The cubic root of 340405039 is about 698.2302498709.

The spelling of 340405039 in words is "three hundred forty million, four hundred five thousand, thirty-nine".