139948899 has 8 divisors (see below), whose sum is σ = 186661632. Its totient is φ = 93267720.

The previous prime is 139948871. The next prime is 139948901. The reversal of 139948899 is 998849931.

It is a happy number.

It is a Cunningham number, because it is equal to 11830²-1.

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

It is not a de Polignac number, because 139948899 - 2⁷ = 139948771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139948829) 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, 5914 + ... + 17744.

It is an arithmetic number, because the mean of its divisors is an integer number (23332704).

Almost surely, 2^139948899 is an apocalyptic number.

139948899 is a deficient number, since it is larger than the sum of its proper divisors (46712733).

139948899 is a wasteful number, since it uses less digits than its factorization.

139948899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15777.

The product of its digits is 5038848, while the sum is 60.

The square root of 139948899 is about 11829.9999577346. Note that the first 4 decimals coincide. The cubic root of 139948899 is about 519.1862259157.

The spelling of 139948899 in words is "one hundred thirty-nine million, nine hundred forty-eight thousand, eight hundred ninety-nine".