30390399 has 24 divisors (see below), whose sum is σ = 47727680. Its totient is φ = 18522432.

The previous prime is 30390331. The next prime is 30390401. The reversal of 30390399 is 99309303.

It is not a de Polignac number, because 30390399 - 2¹² = 30386303 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30390499) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11562 + ... + 13944.

Almost surely, 2^30390399 is an apocalyptic number.

30390399 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

30390399 is a deficient number, since it is larger than the sum of its proper divisors (17337281).

30390399 is a wasteful number, since it uses less digits than its factorization.

30390399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2511 (or 2508 counting only the distinct ones).

The product of its (nonzero) digits is 19683, while the sum is 36.

The square root of 30390399 is about 5512.7487698969. The cubic root of 30390399 is about 312.0652908231.

The spelling of 30390399 in words is "thirty million, three hundred ninety thousand, three hundred ninety-nine".