139955049 has 48 divisors (see below), whose sum is σ = 229791744. Its totient is φ = 81475200.

The previous prime is 139955047. The next prime is 139955071. The reversal of 139955049 is 940559931.

It is a happy number.

139955049 is a `hidden beast` number, since 1 + 3 + 99 + 550 + 4 + 9 = 666.

139955049 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 139955049 - 2¹ = 139955047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 139954995 and 139955013.

It is not an unprimeable number, because it can be changed into a prime (139955041) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 170059 + ... + 170879.

It is an arithmetic number, because the mean of its divisors is an integer number (4787328).

Almost surely, 2^139955049 is an apocalyptic number.

It is an amenable number.

139955049 is a deficient number, since it is larger than the sum of its proper divisors (89836695).

139955049 is a wasteful number, since it uses less digits than its factorization.

139955049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918 (or 915 counting only the distinct ones).

The product of its (nonzero) digits is 218700, while the sum is 45.

The square root of 139955049 is about 11830.2598872552. The cubic root of 139955049 is about 519.1938309500.

It can be divided in two parts, 13995 and 5049, that added together give a square (19044 = 138²).

The spelling of 139955049 in words is "one hundred thirty-nine million, nine hundred fifty-five thousand, forty-nine".