359309 has 4 divisors (see below), whose sum is σ = 378240. Its totient is φ = 340380.

The previous prime is 359299. The next prime is 359311. The reversal of 359309 is 903953.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 903953 = 83 ⋅10891.

It is a cyclic number.

It is not a de Polignac number, because 359309 - 2¹⁶ = 293773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (359389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9437 + ... + 9474.

It is an arithmetic number, because the mean of its divisors is an integer number (94560).

2³⁵⁹³⁰⁹ is an apocalyptic number.

It is an amenable number.

359309 is a deficient number, since it is larger than the sum of its proper divisors (18931).

359309 is a wasteful number, since it uses less digits than its factorization.

359309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18930.

The product of its (nonzero) digits is 3645, while the sum is 29.

The square root of 359309 is about 599.4238900811. The cubic root of 359309 is about 71.0923218769.

Subtracting 359309 from its reverse (903953), we obtain a square (544644 = 738²).

The spelling of 359309 in words is "three hundred fifty-nine thousand, three hundred nine".