139433 has 4 divisors (see below), whose sum is σ = 159360. Its totient is φ = 119508.

The previous prime is 139429. The next prime is 139439. The reversal of 139433 is 334931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 139433 - 2² = 139429 is a prime.

It is a super-2 number, since 2×139433² = 38883122978, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 139399 and 139408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9953 + ... + 9966.

It is an arithmetic number, because the mean of its divisors is an integer number (39840).

2¹³⁹⁴³³ is an apocalyptic number.

It is an amenable number.

139433 is a deficient number, since it is larger than the sum of its proper divisors (19927).

139433 is an equidigital number, since it uses as much as digits as its factorization.

139433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19926.

The product of its digits is 972, while the sum is 23.

The square root of 139433 is about 373.4072843424. The cubic root of 139433 is about 51.8547475014.

The spelling of 139433 in words is "one hundred thirty-nine thousand, four hundred thirty-three".