30399986 has 8 divisors (see below), whose sum is σ = 46373040. Its totient is φ = 14942308.

The previous prime is 30399973. The next prime is 30400003. The reversal of 30399986 is 68999303.

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

It is a self number, because there is not a number n which added to its sum of digits gives 30399986.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128696 + ... + 128931.

It is an arithmetic number, because the mean of its divisors is an integer number (5796630).

Almost surely, 2^30399986 is an apocalyptic number.

30399986 is a deficient number, since it is larger than the sum of its proper divisors (15973054).

30399986 is a wasteful number, since it uses less digits than its factorization.

30399986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257688.

The product of its (nonzero) digits is 314928, while the sum is 47.

The square root of 30399986 is about 5513.6182312525. The cubic root of 30399986 is about 312.0981022318.

The spelling of 30399986 in words is "thirty million, three hundred ninety-nine thousand, nine hundred eighty-six".