1145469397 has 4 divisors (see below), whose sum is σ = 1205757280. Its totient is φ = 1085181516.

The previous prime is 1145469343. The next prime is 1145469431. The reversal of 1145469397 is 7939645411.

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.

It is a cyclic number.

It is not a de Polignac number, because 1145469397 - 2¹⁵ = 1145436629 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1145469397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145469307) 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, 30143913 + ... + 30143950.

It is an arithmetic number, because the mean of its divisors is an integer number (301439320).

Almost surely, 2^1145469397 is an apocalyptic number.

It is an amenable number.

1145469397 is a deficient number, since it is larger than the sum of its proper divisors (60287883).

1145469397 is an equidigital number, since it uses as much as digits as its factorization.

1145469397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60287882.

The product of its digits is 816480, while the sum is 49.

The square root of 1145469397 is about 33844.7838964884. The cubic root of 1145469397 is about 1046.3118973689.

The spelling of 1145469397 in words is "one billion, one hundred forty-five million, four hundred sixty-nine thousand, three hundred ninety-seven".