139534887 has 8 divisors (see below), whose sum is σ = 186145920. Its totient is φ = 92973560.

The previous prime is 139534867. The next prime is 139534897. The reversal of 139534887 is 788435931.

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 139534887 - 2¹¹ = 139532839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139534817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5289 + ... + 17522.

It is an arithmetic number, because the mean of its divisors is an integer number (23268240).

Almost surely, 2^139534887 is an apocalyptic number.

139534887 is a deficient number, since it is larger than the sum of its proper divisors (46611033).

139534887 is a wasteful number, since it uses less digits than its factorization.

139534887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24853.

The product of its digits is 725760, while the sum is 48.

The square root of 139534887 is about 11812.4886031691. The cubic root of 139534887 is about 518.6737492415.

The spelling of 139534887 in words is "one hundred thirty-nine million, five hundred thirty-four thousand, eight hundred eighty-seven".