139718433 has 16 divisors (see below), whose sum is σ = 193849920. Its totient is φ = 89404224.

The previous prime is 139718429. The next prime is 139718521. The reversal of 139718433 is 334817931.

It is a happy number.

139718433 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 139718433 - 2² = 139718429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 139718391 and 139718400.

It is not an unprimeable number, because it can be changed into a prime (139718233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10410 + ... + 19692.

It is an arithmetic number, because the mean of its divisors is an integer number (12115620).

Almost surely, 2^139718433 is an apocalyptic number.

It is an amenable number.

139718433 is a deficient number, since it is larger than the sum of its proper divisors (54131487).

139718433 is a wasteful number, since it uses less digits than its factorization.

139718433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9488.

The product of its digits is 54432, while the sum is 39.

The square root of 139718433 is about 11820.2552002907. The cubic root of 139718433 is about 518.9010729879.

The spelling of 139718433 in words is "one hundred thirty-nine million, seven hundred eighteen thousand, four hundred thirty-three".