53329909 has 4 divisors (see below), whose sum is σ = 53439904. Its totient is φ = 53219916.

The previous prime is 53329897. The next prime is 53329937. The reversal of 53329909 is 90992335.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53329909 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 (53329949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54267 + ... + 55240.

It is an arithmetic number, because the mean of its divisors is an integer number (13359976).

Almost surely, 2^53329909 is an apocalyptic number.

It is an amenable number.

53329909 is a deficient number, since it is larger than the sum of its proper divisors (109995).

53329909 is a wasteful number, since it uses less digits than its factorization.

53329909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109994.

The product of its (nonzero) digits is 65610, while the sum is 40.

The square root of 53329909 is about 7302.7329815625. The cubic root of 53329909 is about 376.4063553274.

The spelling of 53329909 in words is "fifty-three million, three hundred twenty-nine thousand, nine hundred nine".