139785099 has 16 divisors (see below), whose sum is σ = 197677824. Its totient is φ = 87674400.

The previous prime is 139785089. The next prime is 139785119. The reversal of 139785099 is 990587931.

It is a happy number.

139785099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 139785099 - 2⁴ = 139785083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139785089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12397 + ... + 20814.

It is an arithmetic number, because the mean of its divisors is an integer number (12354864).

Almost surely, 2^139785099 is an apocalyptic number.

139785099 is a deficient number, since it is larger than the sum of its proper divisors (57892725).

139785099 is a wasteful number, since it uses less digits than its factorization.

139785099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33298.

The product of its (nonzero) digits is 612360, while the sum is 51.

The square root of 139785099 is about 11823.0748538610. The cubic root of 139785099 is about 518.9835902757.

The spelling of 139785099 in words is "one hundred thirty-nine million, seven hundred eighty-five thousand, ninety-nine".