997433976 has 192 divisors, whose sum is σ = 3163910400. Its totient is φ = 256481280.

The previous prime is 997433971. The next prime is 997433981. The reversal of 997433976 is 679334799.

It is an interprime number because it is at equal distance from previous prime (997433971) and next prime (997433981).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997433971) 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 47 ways as a sum of consecutive naturals, for example, 2825416 + ... + 2825768.

It is an arithmetic number, because the mean of its divisors is an integer number (16478700).

Almost surely, 2^997433976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 997433976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1581955200).

997433976 is an abundant number, since it is smaller than the sum of its proper divisors (2166476424).

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

997433976 is a wasteful number, since it uses less digits than its factorization.

997433976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530 (or 515 counting only the distinct ones).

The product of its digits is 7715736, while the sum is 57.

The square root of 997433976 is about 31582.1781389441. The cubic root of 997433976 is about 999.1439260131.

The spelling of 997433976 in words is "nine hundred ninety-seven million, four hundred thirty-three thousand, nine hundred seventy-six".