30085397 has 4 divisors (see below), whose sum is σ = 30653100. Its totient is φ = 29517696.

The previous prime is 30085387. The next prime is 30085409. The reversal of 30085397 is 79358003.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79358003 = 19 ⋅4176737.

It can be written as a sum of positive squares in 2 ways, for example, as 8916196 + 21169201 = 2986^2 + 4601^2 .

It is a cyclic number.

It is not a de Polignac number, because 30085397 - 2⁴ = 30085381 is a prime.

It is a super-2 number, since 2×30085397² = 1810262225295218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30085387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283772 + ... + 283877.

It is an arithmetic number, because the mean of its divisors is an integer number (7663275).

Almost surely, 2^30085397 is an apocalyptic number.

It is an amenable number.

30085397 is a deficient number, since it is larger than the sum of its proper divisors (567703).

30085397 is an equidigital number, since it uses as much as digits as its factorization.

30085397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567702.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 30085397 is about 5485.0156791025. The cubic root of 30085397 is about 311.0178027670.

The spelling of 30085397 in words is "thirty million, eighty-five thousand, three hundred ninety-seven".