139548433 has 2 divisors, whose sum is σ = 139548434. Its totient is φ = 139548432.

The previous prime is 139548421. The next prime is 139548443. The reversal of 139548433 is 334845931.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83777409 + 55771024 = 9153^2 + 7468^2 .

It is a cyclic number.

It is not a de Polignac number, because 139548433 - 2¹⁷ = 139417361 is a prime.

It is not a weakly prime, because it can be changed into another prime (139548413) 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 as a sum of consecutive naturals, namely, 69774216 + 69774217.

It is an arithmetic number, because the mean of its divisors is an integer number (69774217).

Almost surely, 2^139548433 is an apocalyptic number.

It is an amenable number.

139548433 is a deficient number, since it is larger than the sum of its proper divisors (1).

139548433 is an equidigital number, since it uses as much as digits as its factorization.

139548433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 40.

The square root of 139548433 is about 11813.0619654686. The cubic root of 139548433 is about 518.6905329229.

The spelling of 139548433 in words is "one hundred thirty-nine million, five hundred forty-eight thousand, four hundred thirty-three".