69379809 has 16 divisors (see below), whose sum is σ = 94865472. Its totient is φ = 45085248.

The previous prime is 69379801. The next prime is 69379813. The reversal of 69379809 is 90897396.

It is not a de Polignac number, because 69379809 - 2³ = 69379801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (69379801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24579 + ... + 27255.

It is an arithmetic number, because the mean of its divisors is an integer number (5929092).

Almost surely, 2^69379809 is an apocalyptic number.

It is an amenable number.

69379809 is a deficient number, since it is larger than the sum of its proper divisors (25485663).

69379809 is a wasteful number, since it uses less digits than its factorization.

69379809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2896.

The product of its (nonzero) digits is 734832, while the sum is 51.

The square root of 69379809 is about 8329.4543038545. The cubic root of 69379809 is about 410.9077823662.

The spelling of 69379809 in words is "sixty-nine million, three hundred seventy-nine thousand, eight hundred nine".