139536893 has 8 divisors (see below), whose sum is σ = 151946400. Its totient is φ = 127633968.

The previous prime is 139536889. The next prime is 139536911. The reversal of 139536893 is 398635931.

139536893 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 139536893 - 2² = 139536889 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139536823) 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, 126071 + ... + 127172.

It is an arithmetic number, because the mean of its divisors is an integer number (18993300).

Almost surely, 2^139536893 is an apocalyptic number.

It is an amenable number.

139536893 is a deficient number, since it is larger than the sum of its proper divisors (12409507).

139536893 is a wasteful number, since it uses less digits than its factorization.

139536893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253291.

The product of its digits is 524880, while the sum is 47.

The square root of 139536893 is about 11812.5735129988. The cubic root of 139536893 is about 518.6762347718.

The spelling of 139536893 in words is "one hundred thirty-nine million, five hundred thirty-six thousand, eight hundred ninety-three".