67394109 has 4 divisors (see below), whose sum is σ = 89858816. Its totient is φ = 44929404.

The previous prime is 67394087. The next prime is 67394141. The reversal of 67394109 is 90149376.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 67394109 - 2⁵ = 67394077 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67394149) 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, 11232349 + ... + 11232354.

It is an arithmetic number, because the mean of its divisors is an integer number (22464704).

Almost surely, 2^67394109 is an apocalyptic number.

It is an amenable number.

67394109 is a deficient number, since it is larger than the sum of its proper divisors (22464707).

67394109 is a wasteful number, since it uses less digits than its factorization.

67394109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22464706.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 67394109 is about 8209.3915121646. The cubic root of 67394109 is about 406.9496181702.

The spelling of 67394109 in words is "sixty-seven million, three hundred ninety-four thousand, one hundred nine".