67139349 has 8 divisors (see below), whose sum is σ = 91938720. Its totient is φ = 43549776.

The previous prime is 67139339. The next prime is 67139351. The reversal of 67139349 is 94393176.

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

It is not a de Polignac number, because 67139349 - 2⁴ = 67139333 is a prime.

It is a super-4 number, since 4×67139349⁴ (a number of 32 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 67139349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67139309) 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, 302319 + ... + 302540.

It is an arithmetic number, because the mean of its divisors is an integer number (11492340).

Almost surely, 2^67139349 is an apocalyptic number.

It is an amenable number.

67139349 is a deficient number, since it is larger than the sum of its proper divisors (24799371).

67139349 is a wasteful number, since it uses less digits than its factorization.

67139349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604899.

The product of its digits is 122472, while the sum is 42.

The square root of 67139349 is about 8193.8604454799. The cubic root of 67139349 is about 406.4361934984.

The spelling of 67139349 in words is "sixty-seven million, one hundred thirty-nine thousand, three hundred forty-nine".