30399971 has 8 divisors (see below), whose sum is σ = 34792800. Its totient is φ = 26019648.

The previous prime is 30399947. The next prime is 30399973. The reversal of 30399971 is 17999303.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30399971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30399973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2855 + ... + 8303.

It is an arithmetic number, because the mean of its divisors is an integer number (4349100).

Almost surely, 2^30399971 is an apocalyptic number.

30399971 is a deficient number, since it is larger than the sum of its proper divisors (4392829).

30399971 is an equidigital number, since it uses as much as digits as its factorization.

30399971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6253.

The product of its (nonzero) digits is 45927, while the sum is 41.

The square root of 30399971 is about 5513.6168709841. The cubic root of 30399971 is about 312.0980508998.

The spelling of 30399971 in words is "thirty million, three hundred ninety-nine thousand, nine hundred seventy-one".