139833481 has 8 divisors (see below), whose sum is σ = 142632000. Its totient is φ = 137049360.

The previous prime is 139833469. The next prime is 139833487. The reversal of 139833481 is 184338931.

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 139833481 - 2²⁵ = 106279049 is a prime.

It is a super-2 number, since 2×139833481² = 39106804817154722, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (139833487) 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, 17196 + ... + 23986.

It is an arithmetic number, because the mean of its divisors is an integer number (17829000).

Almost surely, 2^139833481 is an apocalyptic number.

It is an amenable number.

139833481 is a deficient number, since it is larger than the sum of its proper divisors (2798519).

139833481 is an equidigital number, since it uses as much as digits as its factorization.

139833481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7199.

The product of its digits is 62208, while the sum is 40.

The square root of 139833481 is about 11825.1207604827. The cubic root of 139833481 is about 519.0434597178.

The spelling of 139833481 in words is "one hundred thirty-nine million, eight hundred thirty-three thousand, four hundred eighty-one".