139349426 has 4 divisors (see below), whose sum is σ = 209024142. Its totient is φ = 69674712.

The previous prime is 139349423. The next prime is 139349467. The reversal of 139349426 is 624943931.

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., 70476025 + 68873401 = 8395^2 + 8299^2 .

It is not an unprimeable number, because it can be changed into a prime (139349423) 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, 34837355 + ... + 34837358.

Almost surely, 2^139349426 is an apocalyptic number.

139349426 is a deficient number, since it is larger than the sum of its proper divisors (69674716).

139349426 is an equidigital number, since it uses as much as digits as its factorization.

139349426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69674715.

The product of its digits is 139968, while the sum is 41.

The square root of 139349426 is about 11804.6357843010. The cubic root of 139349426 is about 518.4438511756.

It can be divided in two parts, 13 and 9349426, that added together give a palindrome (9349439).

The spelling of 139349426 in words is "one hundred thirty-nine million, three hundred forty-nine thousand, four hundred twenty-six".