139838553 has 6 divisors (see below), whose sum is σ = 201989034. Its totient is φ = 93225696.

The previous prime is 139838509. The next prime is 139838561. The reversal of 139838553 is 355838931.

139838553 is a `hidden beast` number, since 1 + 3 + 98 + 3 + 8 + 553 = 666.

It can be written as a sum of positive squares in only one way, i.e., 136609344 + 3229209 = 11688^2 + 1797^2 .

It is not a de Polignac number, because 139838553 - 2¹⁴ = 139822169 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 139838499 and 139838508.

It is not an unprimeable number, because it can be changed into a prime (139838353) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7768800 + ... + 7768817.

It is an arithmetic number, because the mean of its divisors is an integer number (33664839).

Almost surely, 2^139838553 is an apocalyptic number.

It is an amenable number.

139838553 is a deficient number, since it is larger than the sum of its proper divisors (62150481).

139838553 is a wasteful number, since it uses less digits than its factorization.

139838553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15537623 (or 15537620 counting only the distinct ones).

The product of its digits is 388800, while the sum is 45.

The square root of 139838553 is about 11825.3352172359. The cubic root of 139838553 is about 519.0497351739.

The spelling of 139838553 in words is "one hundred thirty-nine million, eight hundred thirty-eight thousand, five hundred fifty-three".