30744149 has 2 divisors, whose sum is σ = 30744150. Its totient is φ = 30744148.

The previous prime is 30744127. The next prime is 30744163. The reversal of 30744149 is 94144703.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21022225 + 9721924 = 4585^2 + 3118^2 .

It is an emirp because it is prime and its reverse (94144703) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30744149 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30744179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15372074 + 15372075.

It is an arithmetic number, because the mean of its divisors is an integer number (15372075).

Almost surely, 2^30744149 is an apocalyptic number.

It is an amenable number.

30744149 is a deficient number, since it is larger than the sum of its proper divisors (1).

30744149 is an equidigital number, since it uses as much as digits as its factorization.

30744149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 30744149 is about 5544.7406612032. The cubic root of 30744149 is about 313.2714558914.

The spelling of 30744149 in words is "thirty million, seven hundred forty-four thousand, one hundred forty-nine".