139079297 has 16 divisors (see below), whose sum is σ = 170736000. Its totient is φ = 112931280.

The previous prime is 139079293. The next prime is 139079327. The reversal of 139079297 is 792970931.

It is not a de Polignac number, because 139079297 - 2² = 139079293 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139079293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4154 + ... + 17187.

It is an arithmetic number, because the mean of its divisors is an integer number (10671000).

Almost surely, 2^139079297 is an apocalyptic number.

It is an amenable number.

139079297 is a deficient number, since it is larger than the sum of its proper divisors (31656703).

139079297 is an equidigital number, since it uses as much as digits as its factorization.

139079297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21381 (or 21367 counting only the distinct ones).

The product of its (nonzero) digits is 214326, while the sum is 47.

The square root of 139079297 is about 11793.1885849417. The cubic root of 139079297 is about 518.1086331695.

The spelling of 139079297 in words is "one hundred thirty-nine million, seventy-nine thousand, two hundred ninety-seven".