997400001 has 16 divisors (see below), whose sum is σ = 1432730880. Its totient is φ = 613541760.

The previous prime is 997399981. The next prime is 997400011. The reversal of 997400001 is 100004799.

It is not a de Polignac number, because 997400001 - 2¹¹ = 997397953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (997400011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188056 + ... + 193286.

It is an arithmetic number, because the mean of its divisors is an integer number (89545680).

Almost surely, 2^997400001 is an apocalyptic number.

It is an amenable number.

997400001 is a deficient number, since it is larger than the sum of its proper divisors (435330879).

997400001 is a wasteful number, since it uses less digits than its factorization.

997400001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10136.

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 997400001 is about 31581.6402518932. The cubic root of 997400001 is about 999.1325814693.

The spelling of 997400001 in words is "nine hundred ninety-seven million, four hundred thousand, one".