139004643 has 8 divisors (see below), whose sum is σ = 186310656. Its totient is φ = 92184200.

The previous prime is 139004639. The next prime is 139004647. The reversal of 139004643 is 346400931.

It is an interprime number because it is at equal distance from previous prime (139004639) and next prime (139004647).

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 139004643 - 2² = 139004639 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 139004643.

It is not an unprimeable number, because it can be changed into a prime (139004647) 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 7 ways as a sum of consecutive naturals, for example, 120723 + ... + 121868.

It is an arithmetic number, because the mean of its divisors is an integer number (23288832).

Almost surely, 2^139004643 is an apocalyptic number.

139004643 is a deficient number, since it is larger than the sum of its proper divisors (47306013).

139004643 is a wasteful number, since it uses less digits than its factorization.

139004643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242785.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 139004643 is about 11790.0230279673. The cubic root of 139004643 is about 518.0159143503.

The spelling of 139004643 in words is "one hundred thirty-nine million, four thousand, six hundred forty-three".