1149989597 has 2 divisors, whose sum is σ = 1149989598. Its totient is φ = 1149989596.

The previous prime is 1149989593. The next prime is 1149989623. The reversal of 1149989597 is 7959899411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1037226436 + 112763161 = 32206^2 + 10619^2 .

It is a cyclic number.

It is not a de Polignac number, because 1149989597 - 2² = 1149989593 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1149989593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 574994798 + 574994799.

It is an arithmetic number, because the mean of its divisors is an integer number (574994799).

Almost surely, 2^1149989597 is an apocalyptic number.

It is an amenable number.

1149989597 is a deficient number, since it is larger than the sum of its proper divisors (1).

1149989597 is an equidigital number, since it uses as much as digits as its factorization.

1149989597 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7348320, while the sum is 62.

The square root of 1149989597 is about 33911.4965314125. The cubic root of 1149989597 is about 1047.6863939985.

The spelling of 1149989597 in words is "one billion, one hundred forty-nine million, nine hundred eighty-nine thousand, five hundred ninety-seven".