69045409 has 4 divisors (see below), whose sum is σ = 69108016. Its totient is φ = 68982804.

The previous prime is 69045391. The next prime is 69045437. The reversal of 69045409 is 90454096.

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 69045409 - 2⁵ = 69045377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69045469) 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, 29619 + ... + 31864.

It is an arithmetic number, because the mean of its divisors is an integer number (17277004).

Almost surely, 2^69045409 is an apocalyptic number.

It is an amenable number.

69045409 is a deficient number, since it is larger than the sum of its proper divisors (62607).

69045409 is a wasteful number, since it uses less digits than its factorization.

69045409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62606.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 69045409 is about 8309.3567139701. The cubic root of 69045409 is about 410.2465481227.

The spelling of 69045409 in words is "sixty-nine million, forty-five thousand, four hundred nine".