69109090 has 8 divisors (see below), whose sum is σ = 124396380. Its totient is φ = 27643632.

The previous prime is 69109069. The next prime is 69109091. The reversal of 69109090 is 9090196.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 68773849 + 335241 = 8293^2 + 579^2 .

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

69109090 is a modest number, since divided by 9090 gives 6910 as remainder.

It is not an unprimeable number, because it can be changed into a prime (69109091) 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 3 ways as a sum of consecutive naturals, for example, 3455445 + ... + 3455464.

Almost surely, 2^69109090 is an apocalyptic number.

69109090 is a deficient number, since it is larger than the sum of its proper divisors (55287290).

69109090 is a wasteful number, since it uses less digits than its factorization.

69109090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6910916.

The product of its (nonzero) digits is 4374, while the sum is 34.

The square root of 69109090 is about 8313.1877159126. The cubic root of 69109090 is about 410.3726336616.

The spelling of 69109090 in words is "sixty-nine million, one hundred nine thousand, ninety".