139193099 has 4 divisors (see below), whose sum is σ = 139477080. Its totient is φ = 138909120.

The previous prime is 139193081. The next prime is 139193101. The reversal of 139193099 is 990391931.

139193099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 990391931 = 26861 ⋅36871.

It is a cyclic number.

It is not a de Polignac number, because 139193099 - 2⁸ = 139192843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139193009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141254 + ... + 142235.

It is an arithmetic number, because the mean of its divisors is an integer number (34869270).

Almost surely, 2^139193099 is an apocalyptic number.

139193099 is a deficient number, since it is larger than the sum of its proper divisors (283981).

139193099 is an equidigital number, since it uses as much as digits as its factorization.

139193099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283980.

The product of its (nonzero) digits is 59049, while the sum is 44.

The square root of 139193099 is about 11798.0125021124. The cubic root of 139193099 is about 518.2499092265.

The spelling of 139193099 in words is "one hundred thirty-nine million, one hundred ninety-three thousand, ninety-nine".