659409407 has 2 divisors, whose sum is σ = 659409408. Its totient is φ = 659409406.

The previous prime is 659409403. The next prime is 659409409. The reversal of 659409407 is 704904956.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 659409407 - 2² = 659409403 is a prime.

Together with 659409409, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (659409403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329704703 + 329704704.

It is an arithmetic number, because the mean of its divisors is an integer number (329704704).

Almost surely, 2^659409407 is an apocalyptic number.

659409407 is a deficient number, since it is larger than the sum of its proper divisors (1).

659409407 is an equidigital number, since it uses as much as digits as its factorization.

659409407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 659409407 is about 25678.9681840996. The cubic root of 659409407 is about 870.3989921338.

The spelling of 659409407 in words is "six hundred fifty-nine million, four hundred nine thousand, four hundred seven".