139384433 has 2 divisors, whose sum is σ = 139384434. Its totient is φ = 139384432.

The previous prime is 139384429. The next prime is 139384471. The reversal of 139384433 is 334483931.

139384433 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (139384471) can be obtained adding 139384433 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132871729 + 6512704 = 11527^2 + 2552^2 .

It is a cyclic number.

It is not a de Polignac number, because 139384433 - 2² = 139384429 is a prime.

It is not a weakly prime, because it can be changed into another prime (139384403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69692216 + 69692217.

It is an arithmetic number, because the mean of its divisors is an integer number (69692217).

Almost surely, 2^139384433 is an apocalyptic number.

It is an amenable number.

139384433 is a deficient number, since it is larger than the sum of its proper divisors (1).

139384433 is an equidigital number, since it uses as much as digits as its factorization.

139384433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 38.

The square root of 139384433 is about 11806.1184561227. The cubic root of 139384433 is about 518.4872615789.

The spelling of 139384433 in words is "one hundred thirty-nine million, three hundred eighty-four thousand, four hundred thirty-three".