997447592 has 8 divisors (see below), whose sum is σ = 1870214250. Its totient is φ = 498723792.

The previous prime is 997447553. The next prime is 997447609. The reversal of 997447592 is 295744799.

It can be written as a sum of positive squares in only one way, i.e., 899160196 + 98287396 = 29986^2 + 9914^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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, 62340467 + ... + 62340482.

Almost surely, 2^997447592 is an apocalyptic number.

It is an amenable number.

997447592 is a deficient number, since it is larger than the sum of its proper divisors (872766658).

997447592 is a wasteful number, since it uses less digits than its factorization.

997447592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124680955 (or 124680951 counting only the distinct ones).

The product of its digits is 5715360, while the sum is 56.

The square root of 997447592 is about 31582.3937028212. The cubic root of 997447592 is about 999.1484724400.

The spelling of 997447592 in words is "nine hundred ninety-seven million, four hundred forty-seven thousand, five hundred ninety-two".