139663299 has 4 divisors (see below), whose sum is σ = 186217736. Its totient is φ = 93108864.

The previous prime is 139663289. The next prime is 139663301. The reversal of 139663299 is 992366931.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 992366931 = 3 ⋅330788977.

It is not a de Polignac number, because 139663299 - 2⁴ = 139663283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139663259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23277214 + ... + 23277219.

It is an arithmetic number, because the mean of its divisors is an integer number (46554434).

Almost surely, 2^139663299 is an apocalyptic number.

139663299 is a deficient number, since it is larger than the sum of its proper divisors (46554437).

139663299 is an equidigital number, since it uses as much as digits as its factorization.

139663299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46554436.

The product of its digits is 472392, while the sum is 48.

The square root of 139663299 is about 11817.9227870214. The cubic root of 139663299 is about 518.8328098507.

The spelling of 139663299 in words is "one hundred thirty-nine million, six hundred sixty-three thousand, two hundred ninety-nine".