1339125049 has 4 divisors (see below), whose sum is σ = 1370267536. Its totient is φ = 1307982564.

The previous prime is 1339125043. The next prime is 1339125079. The reversal of 1339125049 is 9405219331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9405219331 = 3109 ⋅3025159.

It is a cyclic number.

It is not a de Polignac number, because 1339125049 - 2³ = 1339125041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1339124999 and 1339125017.

It is not an unprimeable number, because it can be changed into a prime (1339125041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15571179 + ... + 15571264.

It is an arithmetic number, because the mean of its divisors is an integer number (342566884).

Almost surely, 2^1339125049 is an apocalyptic number.

It is an amenable number.

1339125049 is a deficient number, since it is larger than the sum of its proper divisors (31142487).

1339125049 is an equidigital number, since it uses as much as digits as its factorization.

1339125049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31142486.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 1339125049 is about 36594.0575640363. The cubic root of 1339125049 is about 1102.2337663373.

The spelling of 1339125049 in words is "one billion, three hundred thirty-nine million, one hundred twenty-five thousand, forty-nine".