30899441 has 4 divisors (see below), whose sum is σ = 30912000. Its totient is φ = 30886884.

The previous prime is 30899431. The next prime is 30899443. The reversal of 30899441 is 14499803.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 14499803 = 367 ⋅39509.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30899441 is a prime.

It is a super-2 number, since 2×30899441² = 1909550908224962, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30899395 and 30899404.

It is not an unprimeable number, because it can be changed into a prime (30899443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1241 + ... + 7958.

It is an arithmetic number, because the mean of its divisors is an integer number (7728000).

Almost surely, 2^30899441 is an apocalyptic number.

It is an amenable number.

30899441 is a deficient number, since it is larger than the sum of its proper divisors (12559).

30899441 is an equidigital number, since it uses as much as digits as its factorization.

30899441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12558.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 30899441 is about 5558.7265628020. The cubic root of 30899441 is about 313.7980262244.

The spelling of 30899441 in words is "thirty million, eight hundred ninety-nine thousand, four hundred forty-one".