997400011 has 2 divisors, whose sum is σ = 997400012. Its totient is φ = 997400010.

The previous prime is 997399981. The next prime is 997400023. The reversal of 997400011 is 110004799.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 997400011 - 2⁹ = 997399499 is a prime.

It is not a weakly prime, because it can be changed into another prime (997400711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498700005 + 498700006.

It is an arithmetic number, because the mean of its divisors is an integer number (498700006).

Almost surely, 2^997400011 is an apocalyptic number.

997400011 is a deficient number, since it is larger than the sum of its proper divisors (1).

997400011 is an equidigital number, since it uses as much as digits as its factorization.

997400011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 997400011 is about 31581.6404102130. The cubic root of 997400011 is about 999.1325848084.

The spelling of 997400011 in words is "nine hundred ninety-seven million, four hundred thousand, eleven".