339409640 has 16 divisors (see below), whose sum is σ = 763671780. Its totient is φ = 135763840.

The previous prime is 339409639. The next prime is 339409657. The reversal of 339409640 is 46904933.

It can be written as a sum of positive squares in 2 ways, for example, as 313785796 + 25623844 = 17714^2 + 5062^2 .

It is a junction number, because it is equal to n+sod(n) for n = 339409594 and 339409603.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4242581 + ... + 4242660.

Almost surely, 2^339409640 is an apocalyptic number.

It is an amenable number.

339409640 is an abundant number, since it is smaller than the sum of its proper divisors (424262140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

339409640 is a wasteful number, since it uses less digits than its factorization.

339409640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8485252 (or 8485248 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 38.

The square root of 339409640 is about 18423.0735763607. The cubic root of 339409640 is about 697.5490062903.

The spelling of 339409640 in words is "three hundred thirty-nine million, four hundred nine thousand, six hundred forty".