67889949 has 8 divisors (see below), whose sum is σ = 92446080. Its totient is φ = 44296896.

The previous prime is 67889903. The next prime is 67889971. The reversal of 67889949 is 94998876.

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

It is not a de Polignac number, because 67889949 - 2¹³ = 67881757 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 67889892 and 67889901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67889999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240604 + ... + 240885.

It is an arithmetic number, because the mean of its divisors is an integer number (11555760).

Almost surely, 2^67889949 is an apocalyptic number.

It is an amenable number.

67889949 is a deficient number, since it is larger than the sum of its proper divisors (24556131).

67889949 is a wasteful number, since it uses less digits than its factorization.

67889949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481539.

The product of its digits is 7838208, while the sum is 60.

The square root of 67889949 is about 8239.5357272118. The cubic root of 67889949 is about 407.9452000121.

The spelling of 67889949 in words is "sixty-seven million, eight hundred eighty-nine thousand, nine hundred forty-nine".