69394487 has 4 divisors (see below), whose sum is σ = 69425616. Its totient is φ = 69363360.

The previous prime is 69394447. The next prime is 69394511. The reversal of 69394487 is 78449396.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 69394487 - 2¹⁴ = 69378103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69394447) 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, 11939 + ... + 16772.

It is an arithmetic number, because the mean of its divisors is an integer number (17356404).

Almost surely, 2^69394487 is an apocalyptic number.

69394487 is a deficient number, since it is larger than the sum of its proper divisors (31129).

69394487 is a wasteful number, since it uses less digits than its factorization.

69394487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31128.

The product of its digits is 1306368, while the sum is 50.

The square root of 69394487 is about 8330.3353473915. The cubic root of 69394487 is about 410.9367575548.

The spelling of 69394487 in words is "sixty-nine million, three hundred ninety-four thousand, four hundred eighty-seven".