30409669 has 2 divisors, whose sum is σ = 30409670. Its totient is φ = 30409668.

The previous prime is 30409663. The next prime is 30409679. The reversal of 30409669 is 96690403.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30107169 + 302500 = 5487^2 + 550^2 .

It is an emirp because it is prime and its reverse (96690403) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30409669 - 2⁷ = 30409541 is a prime.

It is a super-2 number, since 2×30409669² = 1849495937379122, which contains 22 as substring.

It is equal to p_1881775 and since 30409669 and 1881775 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30409663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15204834 + 15204835.

It is an arithmetic number, because the mean of its divisors is an integer number (15204835).

Almost surely, 2^30409669 is an apocalyptic number.

It is an amenable number.

30409669 is a deficient number, since it is larger than the sum of its proper divisors (1).

30409669 is an equidigital number, since it uses as much as digits as its factorization.

30409669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 37.

The square root of 30409669 is about 5514.4962598591. The cubic root of 30409669 is about 312.1312351979.

The spelling of 30409669 in words is "thirty million, four hundred nine thousand, six hundred sixty-nine".