30419991 has 24 divisors (see below), whose sum is σ = 51446304. Its totient is φ = 16957440.

The previous prime is 30419981. The next prime is 30420001. The reversal of 30419991 is 19991403.

It is an interprime number because it is at equal distance from previous prime (30419981) and next prime (30420001).

It is not a de Polignac number, because 30419991 - 2¹¹ = 30417943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30419941) 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 23 ways as a sum of consecutive naturals, for example, 3306 + ... + 8471.

It is an arithmetic number, because the mean of its divisors is an integer number (2143596).

Almost surely, 2^30419991 is an apocalyptic number.

30419991 is a deficient number, since it is larger than the sum of its proper divisors (21026313).

30419991 is a wasteful number, since it uses less digits than its factorization.

30419991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11831 (or 11828 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 36.

The square root of 30419991 is about 5515.4320773626. The cubic root of 30419991 is about 312.1665469288.

The spelling of 30419991 in words is "thirty million, four hundred nineteen thousand, nine hundred ninety-one".