69378489 has 6 divisors (see below), whose sum is σ = 100213386. Its totient is φ = 46252320.

The previous prime is 69378487. The next prime is 69378493. The reversal of 69378489 is 98487396.

69378489 is a `hidden beast` number, since 6 + 93 + 78 + 489 = 666.

It can be written as a sum of positive squares in only one way, i.e., 52707600 + 16670889 = 7260^2 + 4083^2 .

It is not a de Polignac number, because 69378489 - 2¹ = 69378487 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (69378487) 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 5 ways as a sum of consecutive naturals, for example, 3854352 + ... + 3854369.

It is an arithmetic number, because the mean of its divisors is an integer number (16702231).

Almost surely, 2^69378489 is an apocalyptic number.

It is an amenable number.

69378489 is a deficient number, since it is larger than the sum of its proper divisors (30834897).

69378489 is a wasteful number, since it uses less digits than its factorization.

69378489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7708727 (or 7708724 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 69378489 is about 8329.3750665941. The cubic root of 69378489 is about 410.9051764125.

The spelling of 69378489 in words is "sixty-nine million, three hundred seventy-eight thousand, four hundred eighty-nine".