139071746 has 8 divisors (see below), whose sum is σ = 227571984. Its totient is φ = 63214420.

The previous prime is 139071743. The next prime is 139071749. The reversal of 139071746 is 647170931.

It is an interprime number because it is at equal distance from previous prime (139071743) and next prime (139071749).

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

It is not an unprimeable number, because it can be changed into a prime (139071743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3160700 + ... + 3160743.

It is an arithmetic number, because the mean of its divisors is an integer number (28446498).

Almost surely, 2^139071746 is an apocalyptic number.

139071746 is a deficient number, since it is larger than the sum of its proper divisors (88500238).

139071746 is a wasteful number, since it uses less digits than its factorization.

139071746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6321456.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 139071746 is about 11792.8684381706. The cubic root of 139071746 is about 518.0992564825.

The spelling of 139071746 in words is "one hundred thirty-nine million, seventy-one thousand, seven hundred forty-six".