30477397 has 2 divisors, whose sum is σ = 30477398. Its totient is φ = 30477396.

The previous prime is 30477383. The next prime is 30477401. The reversal of 30477397 is 79377403.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30371121 + 106276 = 5511^2 + 326^2 .

It is a cyclic number.

It is not a de Polignac number, because 30477397 - 2¹¹ = 30475349 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30477367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15238698 + 15238699.

It is an arithmetic number, because the mean of its divisors is an integer number (15238699).

Almost surely, 2^30477397 is an apocalyptic number.

It is an amenable number.

30477397 is a deficient number, since it is larger than the sum of its proper divisors (1).

30477397 is an equidigital number, since it uses as much as digits as its factorization.

30477397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 111132, while the sum is 40.

The square root of 30477397 is about 5520.6337498516. The cubic root of 30477397 is about 312.3627881888.

The spelling of 30477397 in words is "thirty million, four hundred seventy-seven thousand, three hundred ninety-seven".