139328851 has 2 divisors, whose sum is σ = 139328852. Its totient is φ = 139328850.

The previous prime is 139328807. The next prime is 139328879. The reversal of 139328851 is 158823931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 139328851 - 2⁹ = 139328339 is a prime.

It is not a weakly prime, because it can be changed into another prime (139328801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69664425 + 69664426.

It is an arithmetic number, because the mean of its divisors is an integer number (69664426).

Almost surely, 2^139328851 is an apocalyptic number.

139328851 is a deficient number, since it is larger than the sum of its proper divisors (1).

139328851 is an equidigital number, since it uses as much as digits as its factorization.

139328851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 40.

The square root of 139328851 is about 11803.7642724683. The cubic root of 139328851 is about 518.4183337705.

The spelling of 139328851 in words is "one hundred thirty-nine million, three hundred twenty-eight thousand, eight hundred fifty-one".