69489381 has 8 divisors (see below), whose sum is σ = 99779680. Its totient is φ = 42762672.

The previous prime is 69489377. The next prime is 69489389. The reversal of 69489381 is 18398496.

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

It is not a de Polignac number, because 69489381 - 2² = 69489377 is a prime.

It is a super-2 number, since 2×69489381² = 9657548143526322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 69489381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69489389) 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 7 ways as a sum of consecutive naturals, for example, 890851 + ... + 890928.

It is an arithmetic number, because the mean of its divisors is an integer number (12472460).

Almost surely, 2^69489381 is an apocalyptic number.

It is an amenable number.

69489381 is a deficient number, since it is larger than the sum of its proper divisors (30290299).

69489381 is a wasteful number, since it uses less digits than its factorization.

69489381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1781795.

The product of its digits is 373248, while the sum is 48.

The square root of 69489381 is about 8336.0290906402. The cubic root of 69489381 is about 411.1239850661.

The spelling of 69489381 in words is "sixty-nine million, four hundred eighty-nine thousand, three hundred eighty-one".