30390689 has 4 divisors (see below), whose sum is σ = 34732224. Its totient is φ = 26049156.

The previous prime is 30390649. The next prime is 30390691. The reversal of 30390689 is 98609303.

It is a happy number.

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.

It is a de Polignac number, because none of the positive numbers 2^k-30390689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30390629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2170757 + ... + 2170770.

It is an arithmetic number, because the mean of its divisors is an integer number (8683056).

Almost surely, 2^30390689 is an apocalyptic number.

It is an amenable number.

30390689 is a deficient number, since it is larger than the sum of its proper divisors (4341535).

30390689 is an equidigital number, since it uses as much as digits as its factorization.

30390689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4341534.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 30390689 is about 5512.7750725021. The cubic root of 30390689 is about 312.0662834463.

The spelling of 30390689 in words is "thirty million, three hundred ninety thousand, six hundred eighty-nine".