139007663 has 4 divisors (see below), whose sum is σ = 139031280. Its totient is φ = 138984048.

The previous prime is 139007651. The next prime is 139007677. The reversal of 139007663 is 366700931.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139007663 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139007683) 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 in 3 ways as a sum of consecutive naturals, for example, 4931 + ... + 17387.

It is an arithmetic number, because the mean of its divisors is an integer number (34757820).

Almost surely, 2^139007663 is an apocalyptic number.

139007663 is a deficient number, since it is larger than the sum of its proper divisors (23617).

139007663 is a wasteful number, since it uses less digits than its factorization.

139007663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23616.

The product of its (nonzero) digits is 20412, while the sum is 35.

The square root of 139007663 is about 11790.1511016611. The cubic root of 139007663 is about 518.0196657759.

The spelling of 139007663 in words is "one hundred thirty-nine million, seven thousand, six hundred sixty-three".