30117749 has 2 divisors, whose sum is σ = 30117750. Its totient is φ = 30117748.

The previous prime is 30117733. The next prime is 30117757. The reversal of 30117749 is 94771103.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27615025 + 2502724 = 5255^2 + 1582^2 .

It is a cyclic number.

It is not a de Polignac number, because 30117749 - 2⁴ = 30117733 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 (30117719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15058874 + 15058875.

It is an arithmetic number, because the mean of its divisors is an integer number (15058875).

Almost surely, 2^30117749 is an apocalyptic number.

It is an amenable number.

30117749 is a deficient number, since it is larger than the sum of its proper divisors (1).

30117749 is an equidigital number, since it uses as much as digits as its factorization.

30117749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 30117749 is about 5487.9640122727. The cubic root of 30117749 is about 311.1292460187.

The spelling of 30117749 in words is "thirty million, one hundred seventeen thousand, seven hundred forty-nine".