307440307729 has 9 divisors (see below), whose sum is σ = 309164868649. Its totient is φ = 305725322740.

The previous prime is 307440307717. The next prime is 307440307787. The reversal of 307440307729 is 927703044703.

The square root of 307440307729 is 554473.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 307440307729 - 2¹⁷ = 307440176657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (307440307799) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 105902892 + ... + 105905794.

Almost surely, 2^307440307729 is an apocalyptic number.

307440307729 is the 554473-rd square number.

307440307729 is the 277237-th centered octagonal number.

It is an amenable number.

307440307729 is a deficient number, since it is larger than the sum of its proper divisors (1724560920).

307440307729 is an frugal number, since it uses more digits than its factorization.

307440307729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6188 (or 3094 counting only the distinct ones).

The product of its (nonzero) digits is 889056, while the sum is 46.

The spelling of 307440307729 in words is "three hundred seven billion, four hundred forty million, three hundred seven thousand, seven hundred twenty-nine".