139228801 has 2 divisors, whose sum is σ = 139228802. Its totient is φ = 139228800.

The previous prime is 139228783. The next prime is 139228807. The reversal of 139228801 is 108822931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132802576 + 6426225 = 11524^2 + 2535^2 .

It is a cyclic number.

It is not a de Polignac number, because 139228801 - 2⁷ = 139228673 is a prime.

It is not a weakly prime, because it can be changed into another prime (139228807) 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, 69614400 + 69614401.

It is an arithmetic number, because the mean of its divisors is an integer number (69614401).

Almost surely, 2^139228801 is an apocalyptic number.

It is an amenable number.

139228801 is a deficient number, since it is larger than the sum of its proper divisors (1).

139228801 is an equidigital number, since it uses as much as digits as its factorization.

139228801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 139228801 is about 11799.5254565597. The cubic root of 139228801 is about 518.2942145278.

The spelling of 139228801 in words is "one hundred thirty-nine million, two hundred twenty-eight thousand, eight hundred one".