139035487 has 4 divisors (see below), whose sum is σ = 139156200. Its totient is φ = 138914776.

The previous prime is 139035473. The next prime is 139035493. The reversal of 139035487 is 784530931.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 139035487 - 2⁷ = 139035359 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139030487) 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, 58612 + ... + 60937.

It is an arithmetic number, because the mean of its divisors is an integer number (34789050).

Almost surely, 2^139035487 is an apocalyptic number.

139035487 is a deficient number, since it is larger than the sum of its proper divisors (120713).

139035487 is a wasteful number, since it uses less digits than its factorization.

139035487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120712.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 139035487 is about 11791.3310105348. The cubic root of 139035487 is about 518.0542260232.

The spelling of 139035487 in words is "one hundred thirty-nine million, thirty-five thousand, four hundred eighty-seven".