30980949 has 8 divisors (see below), whose sum is σ = 41379072. Its totient is φ = 20618400.

The previous prime is 30980947. The next prime is 30980993. The reversal of 30980949 is 94908903.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30980949 - 2¹ = 30980947 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30980949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30980947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6789 + ... + 10394.

It is an arithmetic number, because the mean of its divisors is an integer number (5172384).

Almost surely, 2^30980949 is an apocalyptic number.

It is an amenable number.

30980949 is a deficient number, since it is larger than the sum of its proper divisors (10398123).

30980949 is a wasteful number, since it uses less digits than its factorization.

30980949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17787.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 30980949 is about 5566.0532695978. The cubic root of 30980949 is about 314.0737010386.

The spelling of 30980949 in words is "thirty million, nine hundred eighty thousand, nine hundred forty-nine".