997047964 has 12 divisors (see below), whose sum is σ = 1903455288. Its totient is φ = 453203600.

The previous prime is 997047911. The next prime is 997048001. The reversal of 997047964 is 469740799.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11330047 + ... + 11330134.

It is an arithmetic number, because the mean of its divisors is an integer number (158621274).

Almost surely, 2^997047964 is an apocalyptic number.

It is an amenable number.

997047964 is a deficient number, since it is larger than the sum of its proper divisors (906407324).

997047964 is a wasteful number, since it uses less digits than its factorization.

997047964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22660196 (or 22660194 counting only the distinct ones).

The product of its (nonzero) digits is 3429216, while the sum is 55.

The square root of 997047964 is about 31576.0663161199. The cubic root of 997047964 is about 999.0150181293.

The spelling of 997047964 in words is "nine hundred ninety-seven million, forty-seven thousand, nine hundred sixty-four".