139628799 has 8 divisors (see below), whose sum is σ = 206857520. Its totient is φ = 93085848.

The previous prime is 139628773. The next prime is 139628833. The reversal of 139628799 is 997826931.

139628799 is a `hidden beast` number, since 1 + 3 + 9 + 628 + 7 + 9 + 9 = 666.

139628799 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 139628799 - 2⁸ = 139628543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139628719) 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, 2585692 + ... + 2585745.

It is an arithmetic number, because the mean of its divisors is an integer number (25857190).

Almost surely, 2^139628799 is an apocalyptic number.

139628799 is a deficient number, since it is larger than the sum of its proper divisors (67228721).

139628799 is an equidigital number, since it uses as much as digits as its factorization.

139628799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5171446 (or 5171440 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 54.

The square root of 139628799 is about 11816.4630494916. The cubic root of 139628799 is about 518.7900851784.

The spelling of 139628799 in words is "one hundred thirty-nine million, six hundred twenty-eight thousand, seven hundred ninety-nine".