30404953 has 2 divisors, whose sum is σ = 30404954. Its totient is φ = 30404952.

The previous prime is 30404951. The next prime is 30404971. The reversal of 30404953 is 35940403.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26594649 + 3810304 = 5157^2 + 1952^2 .

It is an emirp because it is prime and its reverse (35940403) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30404953 - 2¹ = 30404951 is a prime.

It is a super-2 number, since 2×30404953² = 1848922333864418, which contains 22 as substring.

Together with 30404951, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (30404951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15202476 + 15202477.

It is an arithmetic number, because the mean of its divisors is an integer number (15202477).

Almost surely, 2^30404953 is an apocalyptic number.

It is an amenable number.

30404953 is a deficient number, since it is larger than the sum of its proper divisors (1).

30404953 is an equidigital number, since it uses as much as digits as its factorization.

30404953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 30404953 is about 5514.0686430258. The cubic root of 30404953 is about 312.1150990253.

The spelling of 30404953 in words is "thirty million, four hundred four thousand, nine hundred fifty-three".