30399970 has 8 divisors (see below), whose sum is σ = 54719964. Its totient is φ = 12159984.

The previous prime is 30399947. The next prime is 30399973. The reversal of 30399970 is 7999303.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 28547649 + 1852321 = 5343^2 + 1361^2 .

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

It is not an unprimeable number, because it can be changed into a prime (30399973) 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, 1519989 + ... + 1520008.

Almost surely, 2^30399970 is an apocalyptic number.

30399970 is a deficient number, since it is larger than the sum of its proper divisors (24319994).

30399970 is a wasteful number, since it uses less digits than its factorization.

30399970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3040004.

The product of its (nonzero) digits is 45927, while the sum is 40.

The square root of 30399970 is about 5513.6167802995. The cubic root of 30399970 is about 312.0980474777.

The spelling of 30399970 in words is "thirty million, three hundred ninety-nine thousand, nine hundred seventy".