30477149 has 2 divisors, whose sum is σ = 30477150. Its totient is φ = 30477148.

The previous prime is 30477143. The next prime is 30477151. The reversal of 30477149 is 94177403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23454649 + 7022500 = 4843^2 + 2650^2 .

It is an emirp because it is prime and its reverse (94177403) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30477149 is a prime.

It is a super-2 number, since 2×30477149² = 1857713222336402, which contains 22 as substring.

Together with 30477151, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30477143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15238574 + 15238575.

It is an arithmetic number, because the mean of its divisors is an integer number (15238575).

Almost surely, 2^30477149 is an apocalyptic number.

It is an amenable number.

30477149 is a deficient number, since it is larger than the sum of its proper divisors (1).

30477149 is an equidigital number, since it uses as much as digits as its factorization.

30477149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 30477149 is about 5520.6112886165. The cubic root of 30477149 is about 312.3619409360.

The spelling of 30477149 in words is "thirty million, four hundred seventy-seven thousand, one hundred forty-nine".