139378299 has 4 divisors (see below), whose sum is σ = 185837736. Its totient is φ = 92918864.

The previous prime is 139378289. The next prime is 139378303. The reversal of 139378299 is 992873931.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 139378299 - 2¹⁶ = 139312763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139378289) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 23229714 + ... + 23229719.

It is an arithmetic number, because the mean of its divisors is an integer number (46459434).

Almost surely, 2^139378299 is an apocalyptic number.

139378299 is a deficient number, since it is larger than the sum of its proper divisors (46459437).

139378299 is an equidigital number, since it uses as much as digits as its factorization.

139378299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46459436.

The product of its digits is 734832, while the sum is 51.

The square root of 139378299 is about 11805.8586727099. The cubic root of 139378299 is about 518.4796556422.

The spelling of 139378299 in words is "one hundred thirty-nine million, three hundred seventy-eight thousand, two hundred ninety-nine".