30955939249 has 9 divisors (see below), whose sum is σ = 32065479147. Its totient is φ = 29883566664.

The previous prime is 30955939247. The next prime is 30955939253. The reversal of 30955939249 is 94293955903.

The square root of 30955939249 is 175943.

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

It can be written as a sum of positive squares in only one way, i.e., 16232543649 + 14723395600 = 127407^2 + 121340^2 .

It is not a de Polignac number, because 30955939249 - 2¹ = 30955939247 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30955939193 and 30955939202.

It is not an unprimeable number, because it can be changed into a prime (30955939243) 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, 5099314 + ... + 5105380.

Almost surely, 2^30955939249 is an apocalyptic number.

30955939249 is the 175943-rd square number.

30955939249 is the 87972-nd centered octagonal number.

It is an amenable number.

30955939249 is a deficient number, since it is larger than the sum of its proper divisors (1109539898).

30955939249 is an frugal number, since it uses more digits than its factorization.

30955939249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12192 (or 6096 counting only the distinct ones).

The product of its (nonzero) digits is 11809800, while the sum is 58.

The spelling of 30955939249 in words is "thirty billion, nine hundred fifty-five million, nine hundred thirty-nine thousand, two hundred forty-nine".