139080457 has 2 divisors, whose sum is σ = 139080458. Its totient is φ = 139080456.

The previous prime is 139080407. The next prime is 139080463. The reversal of 139080457 is 754080931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118613881 + 20466576 = 10891^2 + 4524^2 .

It is an emirp because it is prime and its reverse (754080931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139080457 - 2⁷ = 139080329 is a prime.

It is not a weakly prime, because it can be changed into another prime (139080407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69540228 + 69540229.

It is an arithmetic number, because the mean of its divisors is an integer number (69540229).

Almost surely, 2^139080457 is an apocalyptic number.

It is an amenable number.

139080457 is a deficient number, since it is larger than the sum of its proper divisors (1).

139080457 is an equidigital number, since it uses as much as digits as its factorization.

139080457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 139080457 is about 11793.2377657707. The cubic root of 139080457 is about 518.1100736052.

The spelling of 139080457 in words is "one hundred thirty-nine million, eighty thousand, four hundred fifty-seven".