139049523 has 6 divisors (see below), whose sum is σ = 200849324. Its totient is φ = 92699676.

The previous prime is 139049509. The next prime is 139049569. The reversal of 139049523 is 325940931.

It is a happy number.

139049523 is a `hidden beast` number, since 1 + 3 + 90 + 49 + 523 = 666.

It is not a de Polignac number, because 139049523 - 2¹² = 139045427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139049123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7724965 + ... + 7724982.

Almost surely, 2^139049523 is an apocalyptic number.

139049523 is a deficient number, since it is larger than the sum of its proper divisors (61799801).

139049523 is a wasteful number, since it uses less digits than its factorization.

139049523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15449953 (or 15449950 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 139049523 is about 11791.9261785342. The cubic root of 139049523 is about 518.0716584179.

The spelling of 139049523 in words is "one hundred thirty-nine million, forty-nine thousand, five hundred twenty-three".