139144607 has 4 divisors (see below), whose sum is σ = 159022416. Its totient is φ = 119266800.

The previous prime is 139144601. The next prime is 139144613. The reversal of 139144607 is 706441931.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (139144601) and next prime (139144613).

It is a cyclic number.

It is not a de Polignac number, because 139144607 - 2¹⁸ = 138882463 is a prime.

It is a super-2 number, since 2×139144607² = 38722443314368898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139144601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9938894 + ... + 9938907.

It is an arithmetic number, because the mean of its divisors is an integer number (39755604).

Almost surely, 2^139144607 is an apocalyptic number.

139144607 is a deficient number, since it is larger than the sum of its proper divisors (19877809).

139144607 is an equidigital number, since it uses as much as digits as its factorization.

139144607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19877808.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 139144607 is about 11795.9572311873. The cubic root of 139144607 is about 518.1897197159.

The spelling of 139144607 in words is "one hundred thirty-nine million, one hundred forty-four thousand, six hundred seven".