139999995 has 20 divisors (see below), whose sum is σ = 250963680. Its totient is φ = 74666448.

The previous prime is 139999991. The next prime is 140000041. The reversal of 139999995 is 599999931.

It is not a de Polignac number, because 139999995 - 2² = 139999991 is a prime.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139999991) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 172435 + ... + 173244.

It is an arithmetic number, because the mean of its divisors is an integer number (12548184).

Almost surely, 2^139999995 is an apocalyptic number.

139999995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

139999995 is a deficient number, since it is larger than the sum of its proper divisors (110963685).

139999995 is an equidigital number, since it uses as much as digits as its factorization.

139999995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345696 (or 345687 counting only the distinct ones).

The product of its digits is 7971615, while the sum is 63.

The square root of 139999995 is about 11832.1593549107. The cubic root of 139999995 is about 519.2494040036.

The spelling of 139999995 in words is "one hundred thirty-nine million, nine hundred ninety-nine thousand, nine hundred ninety-five".