997275079 has 2 divisors, whose sum is σ = 997275080. Its totient is φ = 997275078.

The previous prime is 997275073. The next prime is 997275089. The reversal of 997275079 is 970572799.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 997275079 - 2⁷ = 997274951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997275073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498637539 + 498637540.

It is an arithmetic number, because the mean of its divisors is an integer number (498637540).

Almost surely, 2^997275079 is an apocalyptic number.

997275079 is a deficient number, since it is larger than the sum of its proper divisors (1).

997275079 is an equidigital number, since it uses as much as digits as its factorization.

997275079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2500470, while the sum is 55.

The square root of 997275079 is about 31579.6624269481. The cubic root of 997275079 is about 999.0908667272.

The spelling of 997275079 in words is "nine hundred ninety-seven million, two hundred seventy-five thousand, seventy-nine".