340440417 has 12 divisors (see below), whose sum is σ = 503183824. Its totient is φ = 221681880.

The previous prime is 340440409. The next prime is 340440421. The reversal of 340440417 is 714044043.

It is not a de Polignac number, because 340440417 - 2³ = 340440409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340440407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 439459 + ... + 440232.

Almost surely, 2^340440417 is an apocalyptic number.

It is an amenable number.

340440417 is a deficient number, since it is larger than the sum of its proper divisors (162743407).

340440417 is a wasteful number, since it uses less digits than its factorization.

340440417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879740 (or 879737 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 340440417 is about 18451.0275323625. The cubic root of 340440417 is about 698.2544378541.

The spelling of 340440417 in words is "three hundred forty million, four hundred forty thousand, four hundred seventeen".