11858139439 has 8 divisors (see below), whose sum is σ = 11897518032. Its totient is φ = 11818794240.

The previous prime is 11858139427. The next prime is 11858139481. The reversal of 11858139439 is 93493185811.

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 11858139439 - 2⁷ = 11858139311 is a prime.

It is a super-3 number, since 3×11858139439³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11858134439) 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, 844117 + ... + 858049.

It is an arithmetic number, because the mean of its divisors is an integer number (1487189754).

Almost surely, 2^11858139439 is an apocalyptic number.

11858139439 is a deficient number, since it is larger than the sum of its proper divisors (39378593).

11858139439 is a wasteful number, since it uses less digits than its factorization.

11858139439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16697.

The product of its digits is 933120, while the sum is 52.

The spelling of 11858139439 in words is "eleven billion, eight hundred fifty-eight million, one hundred thirty-nine thousand, four hundred thirty-nine".