139433746 has 4 divisors (see below), whose sum is σ = 209150622. Its totient is φ = 69716872.

The previous prime is 139433713. The next prime is 139433747. The reversal of 139433746 is 647334931.

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 only one way, i.e., 89094721 + 50339025 = 9439^2 + 7095^2 .

It is a junction number, because it is equal to n+sod(n) for n = 139433699 and 139433708.

It is not an unprimeable number, because it can be changed into a prime (139433747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34858435 + ... + 34858438.

Almost surely, 2^139433746 is an apocalyptic number.

139433746 is a deficient number, since it is larger than the sum of its proper divisors (69716876).

139433746 is an equidigital number, since it uses as much as digits as its factorization.

139433746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69716875.

The product of its digits is 163296, while the sum is 40.

The square root of 139433746 is about 11808.2067224452. The cubic root of 139433746 is about 518.5483997971.

It can be divided in two parts, 13943 and 3746, that added together give a square (17689 = 133²).

The spelling of 139433746 in words is "one hundred thirty-nine million, four hundred thirty-three thousand, seven hundred forty-six".