9280399 has 2 divisors, whose sum is σ = 9280400. Its totient is φ = 9280398.

The previous prime is 9280393. The next prime is 9280409. The reversal of 9280399 is 9930829.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (9930829) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9280399 - 2⁹ = 9279887 is a prime.

It is a super-2 number, since 2×9280399² = 172251611198402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9280393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4640199 + 4640200.

It is an arithmetic number, because the mean of its divisors is an integer number (4640200).

Almost surely, 2^9280399 is an apocalyptic number.

9280399 is a deficient number, since it is larger than the sum of its proper divisors (1).

9280399 is an equidigital number, since it uses as much as digits as its factorization.

9280399 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 40.

The square root of 9280399 is about 3046.3747307250. The cubic root of 9280399 is about 210.1465266117.

The spelling of 9280399 in words is "nine million, two hundred eighty thousand, three hundred ninety-nine".