139080897 has 36 divisors (see below), whose sum is σ = 213686460. Its totient is φ = 87064320.

The previous prime is 139080881. The next prime is 139080959. The reversal of 139080897 is 798080931.

It can be written as a sum of positive squares in 6 ways, for example, as 75064896 + 64016001 = 8664^2 + 8001^2 .

It is not a de Polignac number, because 139080897 - 2⁴ = 139080881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139080497) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 438583 + ... + 438899.

It is an arithmetic number, because the mean of its divisors is an integer number (5935735).

Almost surely, 2^139080897 is an apocalyptic number.

It is an amenable number.

139080897 is a deficient number, since it is larger than the sum of its proper divisors (74605563).

139080897 is a wasteful number, since it uses less digits than its factorization.

139080897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434 (or 390 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 139080897 is about 11793.2564205142. The cubic root of 139080897 is about 518.1106199752.

The spelling of 139080897 in words is "one hundred thirty-nine million, eighty thousand, eight hundred ninety-seven".