139093769 has 4 divisors (see below), whose sum is σ = 139424580. Its totient is φ = 138762960.

The previous prime is 139093763. The next prime is 139093789. The reversal of 139093769 is 967390931.

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 34951744 + 104142025 = 5912^2 + 10205^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139093769 is a prime.

It is a super-2 number, since 2×139093769² = 38694153149250722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139093763) 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, 164774 + ... + 165615.

It is an arithmetic number, because the mean of its divisors is an integer number (34856145).

Almost surely, 2^139093769 is an apocalyptic number.

It is an amenable number.

139093769 is a deficient number, since it is larger than the sum of its proper divisors (330811).

139093769 is an equidigital number, since it uses as much as digits as its factorization.

139093769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330810.

The product of its (nonzero) digits is 275562, while the sum is 47.

The square root of 139093769 is about 11793.8021434989. The cubic root of 139093769 is about 518.1266032730.

It can be divided in two parts, 1390 and 93769, that added together give a palindrome (95159).

The spelling of 139093769 in words is "one hundred thirty-nine million, ninety-three thousand, seven hundred sixty-nine".