1305029397 has 24 divisors (see below), whose sum is σ = 2030318112. Its totient is φ = 743450400.

The previous prime is 1305029387. The next prime is 1305029443. The reversal of 1305029397 is 7939205031.

It is not a de Polignac number, because 1305029397 - 2⁶ = 1305029333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1305029347) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35247 + ... + 62067.

It is an arithmetic number, because the mean of its divisors is an integer number (84596588).

Almost surely, 2^1305029397 is an apocalyptic number.

It is an amenable number.

1305029397 is a deficient number, since it is larger than the sum of its proper divisors (725288715).

1305029397 is a wasteful number, since it uses less digits than its factorization.

1305029397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27169 (or 27162 counting only the distinct ones).

The product of its (nonzero) digits is 51030, while the sum is 39.

The square root of 1305029397 is about 36125.1906154141. The cubic root of 1305029397 is about 1092.7985201511.

The spelling of 1305029397 in words is "one billion, three hundred five million, twenty-nine thousand, three hundred ninety-seven".