30485977 has 2 divisors, whose sum is σ = 30485978. Its totient is φ = 30485976.

The previous prime is 30485963. The next prime is 30486023. The reversal of 30485977 is 77958403.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28772496 + 1713481 = 5364^2 + 1309^2 .

It is an emirp because it is prime and its reverse (77958403) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30485977 - 2⁷ = 30485849 is a prime.

It is not a weakly prime, because it can be changed into another prime (30485957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15242988 + 15242989.

It is an arithmetic number, because the mean of its divisors is an integer number (15242989).

Almost surely, 2^30485977 is an apocalyptic number.

It is an amenable number.

30485977 is a deficient number, since it is larger than the sum of its proper divisors (1).

30485977 is an equidigital number, since it uses as much as digits as its factorization.

30485977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 30485977 is about 5521.4107798641. The cubic root of 30485977 is about 312.3920975736.

It can be divided in two parts, 3048 and 5977, that added together give a square (9025 = 95²).

The spelling of 30485977 in words is "thirty million, four hundred eighty-five thousand, nine hundred seventy-seven".