30091493 has 4 divisors (see below), whose sum is σ = 30178560. Its totient is φ = 30004428.

The previous prime is 30091489. The next prime is 30091517. The reversal of 30091493 is 39419003.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30091493 - 2² = 30091489 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30091993) 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 in 3 ways as a sum of consecutive naturals, for example, 43013 + ... + 43706.

It is an arithmetic number, because the mean of its divisors is an integer number (7544640).

Almost surely, 2^30091493 is an apocalyptic number.

It is an amenable number.

30091493 is a deficient number, since it is larger than the sum of its proper divisors (87067).

30091493 is an equidigital number, since it uses as much as digits as its factorization.

30091493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87066.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 30091493 is about 5485.5713467241. The cubic root of 30091493 is about 311.0388078246.

The spelling of 30091493 in words is "thirty million, ninety-one thousand, four hundred ninety-three".