139333157 has 4 divisors (see below), whose sum is σ = 143098956. Its totient is φ = 135567360.

The previous prime is 139333121. The next prime is 139333171. The reversal of 139333157 is 751333931.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 116618401 + 22714756 = 10799^2 + 4766^2 .

It is a cyclic number.

It is not a de Polignac number, because 139333157 - 2²⁶ = 72224293 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 (139333177) 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, 1882844 + ... + 1882917.

It is an arithmetic number, because the mean of its divisors is an integer number (35774739).

Almost surely, 2^139333157 is an apocalyptic number.

It is an amenable number.

139333157 is a deficient number, since it is larger than the sum of its proper divisors (3765799).

139333157 is an equidigital number, since it uses as much as digits as its factorization.

139333157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3765798.

The product of its digits is 25515, while the sum is 35.

The square root of 139333157 is about 11803.9466704997. The cubic root of 139333157 is about 518.4236743403.

The spelling of 139333157 in words is "one hundred thirty-nine million, three hundred thirty-three thousand, one hundred fifty-seven".