997962100 has 18 divisors (see below), whose sum is σ = 2165577974. Its totient is φ = 399184800.

The previous prime is 997962083. The next prime is 997962109. The reversal of 997962100 is 1269799.

It can be written as a sum of positive squares in 3 ways, for example, as 288592144 + 709369956 = 16988^2 + 26634^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997962109) by changing a digit.

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 in 5 ways as a sum of consecutive naturals, for example, 4989711 + ... + 4989910.

Almost surely, 2^997962100 is an apocalyptic number.

It is an amenable number.

997962100 is an abundant number, since it is smaller than the sum of its proper divisors (1167615874).

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

997962100 is a wasteful number, since it uses less digits than its factorization.

997962100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9979635 (or 9979628 counting only the distinct ones).

The product of its (nonzero) digits is 61236, while the sum is 43.

The square root of 997962100 is about 31590.5381403989. The cubic root of 997962100 is about 999.3202380284.

The spelling of 997962100 in words is "nine hundred ninety-seven million, nine hundred sixty-two thousand, one hundred".