139446233 has 8 divisors (see below), whose sum is σ = 142275528. Its totient is φ = 136624384.

The previous prime is 139446221. The next prime is 139446287. The reversal of 139446233 is 332644931.

It can be written as a sum of positive squares in 4 ways, for example, as 61512649 + 77933584 = 7843^2 + 8828^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 139446233 - 2¹⁰ = 139445209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139446193 and 139446202.

It is not an unprimeable number, because it can be changed into a prime (139446533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50435 + ... + 53127.

It is an arithmetic number, because the mean of its divisors is an integer number (17784441).

Almost surely, 2^139446233 is an apocalyptic number.

It is an amenable number.

139446233 is a deficient number, since it is larger than the sum of its proper divisors (2829295).

139446233 is an equidigital number, since it uses as much as digits as its factorization.

139446233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3723.

The product of its digits is 46656, while the sum is 35.

The square root of 139446233 is about 11808.7354530449. The cubic root of 139446233 is about 518.5638788825.

The spelling of 139446233 in words is "one hundred thirty-nine million, four hundred forty-six thousand, two hundred thirty-three".