210139831439 has 8 divisors (see below), whose sum is σ = 210385683072. Its totient is φ = 209894063320.

The previous prime is 210139831427. The next prime is 210139831441. The reversal of 210139831439 is 934138931012.

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 210139831439 - 2²⁰ = 210138782863 is a prime.

It is a super-2 number, since 2×210139831439² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 210139831439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210139831939) 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, 6006692 + ... + 6041574.

It is an arithmetic number, because the mean of its divisors is an integer number (26298210384).

Almost surely, 2^210139831439 is an apocalyptic number.

210139831439 is a deficient number, since it is larger than the sum of its proper divisors (245851633).

210139831439 is a wasteful number, since it uses less digits than its factorization.

210139831439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41757.

The product of its (nonzero) digits is 139968, while the sum is 44.

The spelling of 210139831439 in words is "two hundred ten billion, one hundred thirty-nine million, eight hundred thirty-one thousand, four hundred thirty-nine".