139436253 has 24 divisors (see below), whose sum is σ = 221141856. Its totient is φ = 83959200.

The previous prime is 139436251. The next prime is 139436267. The reversal of 139436253 is 352634931.

It is a happy number.

139436253 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 139436253 - 2¹ = 139436251 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139436251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11058 + ... + 20028.

It is an arithmetic number, because the mean of its divisors is an integer number (9214244).

Almost surely, 2^139436253 is an apocalyptic number.

It is an amenable number.

139436253 is a deficient number, since it is larger than the sum of its proper divisors (81705603).

139436253 is a wasteful number, since it uses less digits than its factorization.

139436253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9145 (or 9142 counting only the distinct ones).

The product of its digits is 58320, while the sum is 36.

The square root of 139436253 is about 11808.3128769524. The cubic root of 139436253 is about 518.5515075886.

The spelling of 139436253 in words is "one hundred thirty-nine million, four hundred thirty-six thousand, two hundred fifty-three".