69090909 has 8 divisors (see below), whose sum is σ = 95092992. Its totient is φ = 44574720.

The previous prime is 69090899. The next prime is 69090929. The reversal of 69090909 is 90909096.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 69090909 - 2⁸ = 69090653 is a prime.

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

69090909 is a modest number, since divided by 90909 gives 69 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69090929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 371364 + ... + 371549.

It is an arithmetic number, because the mean of its divisors is an integer number (11886624).

Almost surely, 2^69090909 is an apocalyptic number.

It is an amenable number.

69090909 is a deficient number, since it is larger than the sum of its proper divisors (26002083).

69090909 is a wasteful number, since it uses less digits than its factorization.

69090909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742947.

The product of its (nonzero) digits is 39366, while the sum is 42.

The square root of 69090909 is about 8312.0941404679. The cubic root of 69090909 is about 410.3366439956.

The spelling of 69090909 in words is "sixty-nine million, ninety thousand, nine hundred nine".