997573446 has 24 divisors (see below), whose sum is σ = 2177191224. Its totient is φ = 330096480.

The previous prime is 997573441. The next prime is 997573463. The reversal of 997573446 is 644375799.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 997573392 and 997573401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997573441) 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 11 ways as a sum of consecutive naturals, for example, 199800 + ... + 204731.

It is an arithmetic number, because the mean of its divisors is an integer number (90716301).

Almost surely, 2^997573446 is an apocalyptic number.

997573446 is an abundant number, since it is smaller than the sum of its proper divisors (1179617778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

997573446 is a wasteful number, since it uses less digits than its factorization.

997573446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404676 (or 404673 counting only the distinct ones).

The product of its digits is 5715360, while the sum is 54.

The square root of 997573446 is about 31584.3861108618. The cubic root of 997573446 is about 999.1904935428.

The spelling of 997573446 in words is "nine hundred ninety-seven million, five hundred seventy-three thousand, four hundred forty-six".