30408769 has 2 divisors, whose sum is σ = 30408770. Its totient is φ = 30408768.

The previous prime is 30408751. The next prime is 30408811. The reversal of 30408769 is 96780403.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23648769 + 6760000 = 4863^2 + 2600^2 .

It is an emirp because it is prime and its reverse (96780403) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30408769 - 2⁷ = 30408641 is a prime.

It is a super-2 number, since 2×30408769² = 1849386464190722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30408739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15204384 + 15204385.

It is an arithmetic number, because the mean of its divisors is an integer number (15204385).

Almost surely, 2^30408769 is an apocalyptic number.

It is an amenable number.

30408769 is a deficient number, since it is larger than the sum of its proper divisors (1).

30408769 is an equidigital number, since it uses as much as digits as its factorization.

30408769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 30408769 is about 5514.4146561535. The cubic root of 30408769 is about 312.1281559045.

The spelling of 30408769 in words is "thirty million, four hundred eight thousand, seven hundred sixty-nine".