139992841 has 8 divisors (see below), whose sum is σ = 148400424. Its totient is φ = 131604480.

The previous prime is 139992829. The next prime is 139992851. The reversal of 139992841 is 148299931.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4968441 + 135024400 = 2229^2 + 11620^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 139992841 - 2¹⁷ = 139861769 is a prime.

It is a super-3 number, since 3×139992841³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139992791 and 139992800.

It is not an unprimeable number, because it can be changed into a prime (139992851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11881 + ... + 20521.

It is an arithmetic number, because the mean of its divisors is an integer number (18550053).

Almost surely, 2^139992841 is an apocalyptic number.

It is an amenable number.

139992841 is a deficient number, since it is larger than the sum of its proper divisors (8407583).

139992841 is an equidigital number, since it uses as much as digits as its factorization.

139992841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9611.

The product of its digits is 139968, while the sum is 46.

The square root of 139992841 is about 11831.8570393662. The cubic root of 139992841 is about 519.2405593044.

The spelling of 139992841 in words is "one hundred thirty-nine million, nine hundred ninety-two thousand, eight hundred forty-one".