139597133 has 4 divisors (see below), whose sum is σ = 150335388. Its totient is φ = 128858880.

The previous prime is 139597111. The next prime is 139597141. The reversal of 139597133 is 331795931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 331795931 = 29 ⋅11441239.

It can be written as a sum of positive squares in 2 ways, for example, as 8219689 + 131377444 = 2867^2 + 11462^2 .

It is a cyclic number.

It is not a de Polignac number, because 139597133 - 2¹⁰ = 139596109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139597103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5369108 + ... + 5369133.

It is an arithmetic number, because the mean of its divisors is an integer number (37583847).

Almost surely, 2^139597133 is an apocalyptic number.

139597133 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

139597133 is a deficient number, since it is larger than the sum of its proper divisors (10738255).

139597133 is a wasteful number, since it uses less digits than its factorization.

139597133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10738254.

The product of its digits is 76545, while the sum is 41.

The square root of 139597133 is about 11815.1230632609. The cubic root of 139597133 is about 518.7508639266.

The spelling of 139597133 in words is "one hundred thirty-nine million, five hundred ninety-seven thousand, one hundred thirty-three".