139819995 has 24 divisors (see below), whose sum is σ = 276977376. Its totient is φ = 63917568.

The previous prime is 139819957. The next prime is 139820017. The reversal of 139819995 is 599918931.

It is not a de Polignac number, because 139819995 - 2⁹ = 139819483 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 221622 + ... + 222251.

It is an arithmetic number, because the mean of its divisors is an integer number (11540724).

Almost surely, 2^139819995 is an apocalyptic number.

139819995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

139819995 is a deficient number, since it is larger than the sum of its proper divisors (137157381).

139819995 is a wasteful number, since it uses less digits than its factorization.

139819995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443891 (or 443888 counting only the distinct ones).

The product of its digits is 787320, while the sum is 54.

The square root of 139819995 is about 11824.5505199986. The cubic root of 139819995 is about 519.0267730962.

The spelling of 139819995 in words is "one hundred thirty-nine million, eight hundred nineteen thousand, nine hundred ninety-five".