69494509 has 4 divisors (see below), whose sum is σ = 79422304. Its totient is φ = 59566716.

The previous prime is 69494471. The next prime is 69494531. The reversal of 69494509 is 90549496.

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 not a de Polignac number, because 69494509 - 2¹⁹ = 68970221 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69494539) 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 3 ways as a sum of consecutive naturals, for example, 4963887 + ... + 4963900.

It is an arithmetic number, because the mean of its divisors is an integer number (19855576).

Almost surely, 2^69494509 is an apocalyptic number.

It is an amenable number.

69494509 is a deficient number, since it is larger than the sum of its proper divisors (9927795).

69494509 is an equidigital number, since it uses as much as digits as its factorization.

69494509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9927794.

The product of its (nonzero) digits is 349920, while the sum is 46.

The square root of 69494509 is about 8336.3366654664. The cubic root of 69494509 is about 411.1340978436.

The spelling of 69494509 in words is "sixty-nine million, four hundred ninety-four thousand, five hundred nine".