139148773 has 2 divisors, whose sum is σ = 139148774. Its totient is φ = 139148772.

The previous prime is 139148767. The next prime is 139148813. The reversal of 139148773 is 377841931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137194369 + 1954404 = 11713^2 + 1398^2 .

It is a cyclic number.

It is not a de Polignac number, because 139148773 - 2¹⁷ = 139017701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139148173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69574386 + 69574387.

It is an arithmetic number, because the mean of its divisors is an integer number (69574387).

Almost surely, 2^139148773 is an apocalyptic number.

It is an amenable number.

139148773 is a deficient number, since it is larger than the sum of its proper divisors (1).

139148773 is an equidigital number, since it uses as much as digits as its factorization.

139148773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 43.

The square root of 139148773 is about 11796.1338157890. The cubic root of 139148773 is about 518.1948912107.

The spelling of 139148773 in words is "one hundred thirty-nine million, one hundred forty-eight thousand, seven hundred seventy-three".