139528383 has 16 divisors (see below), whose sum is σ = 193591296. Its totient is φ = 89317280.

The previous prime is 139528357. The next prime is 139528387. The reversal of 139528383 is 383825931.

It is a cyclic number.

It is not a de Polignac number, because 139528383 - 2¹⁶ = 139462847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139528387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1863 + ... + 16808.

It is an arithmetic number, because the mean of its divisors is an integer number (12099456).

Almost surely, 2^139528383 is an apocalyptic number.

139528383 is a deficient number, since it is larger than the sum of its proper divisors (54062913).

139528383 is a wasteful number, since it uses less digits than its factorization.

139528383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18774.

The product of its digits is 155520, while the sum is 42.

The square root of 139528383 is about 11812.2132981080. The cubic root of 139528383 is about 518.6656903096.

The spelling of 139528383 in words is "one hundred thirty-nine million, five hundred twenty-eight thousand, three hundred eighty-three".