139945395 has 8 divisors (see below), whose sum is σ = 223912656. Its totient is φ = 74637536.

The previous prime is 139945373. The next prime is 139945397. The reversal of 139945395 is 593549931.

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

It is a cyclic number.

It is not a de Polignac number, because 139945395 - 2²⁶ = 72836531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139945397) 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, 4664832 + ... + 4664861.

It is an arithmetic number, because the mean of its divisors is an integer number (27989082).

Almost surely, 2^139945395 is an apocalyptic number.

139945395 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

139945395 is a deficient number, since it is larger than the sum of its proper divisors (83967261).

139945395 is an equidigital number, since it uses as much as digits as its factorization.

139945395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9329701.

The product of its digits is 656100, while the sum is 48.

The square root of 139945395 is about 11829.8518587512. The cubic root of 139945395 is about 519.1818928014.

The spelling of 139945395 in words is "one hundred thirty-nine million, nine hundred forty-five thousand, three hundred ninety-five".