1129250397 has 32 divisors (see below), whose sum is σ = 1703827584. Its totient is φ = 659232000.

The previous prime is 1129250393. The next prime is 1129250461. The reversal of 1129250397 is 7930529211.

It is not a de Polignac number, because 1129250397 - 2² = 1129250393 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1129250393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118743 + ... + 127899.

It is an arithmetic number, because the mean of its divisors is an integer number (53244612).

Almost surely, 2^1129250397 is an apocalyptic number.

It is an amenable number.

1129250397 is a deficient number, since it is larger than the sum of its proper divisors (574577187).

1129250397 is a wasteful number, since it uses less digits than its factorization.

1129250397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9309.

The product of its (nonzero) digits is 34020, while the sum is 39.

The square root of 1129250397 is about 33604.3211060721. The cubic root of 1129250397 is about 1041.3500701886.

The spelling of 1129250397 in words is "one billion, one hundred twenty-nine million, two hundred fifty thousand, three hundred ninety-seven".