67040139 has 8 divisors (see below), whose sum is σ = 91465792. Its totient is φ = 43653960.

The previous prime is 67040119. The next prime is 67040143. The reversal of 67040139 is 93104076.

It is a happy number.

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

It is not a de Polignac number, because 67040139 - 2⁸ = 67039883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67040119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259717 + ... + 259974.

It is an arithmetic number, because the mean of its divisors is an integer number (11433224).

Almost surely, 2^67040139 is an apocalyptic number.

67040139 is a deficient number, since it is larger than the sum of its proper divisors (24425653).

67040139 is a wasteful number, since it uses less digits than its factorization.

67040139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519737.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 67040139 is about 8187.8042844220. The cubic root of 67040139 is about 406.2359015541.

The spelling of 67040139 in words is "sixty-seven million, forty thousand, one hundred thirty-nine".