997739032 has 16 divisors (see below), whose sum is σ = 1894442400. Its totient is φ = 492554400.

The previous prime is 997738991. The next prime is 997739033. The reversal of 997739032 is 230937799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997739033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 788719 + ... + 789982.

It is an arithmetic number, because the mean of its divisors is an integer number (118402650).

Almost surely, 2^997739032 is an apocalyptic number.

It is an amenable number.

997739032 is a deficient number, since it is larger than the sum of its proper divisors (896703368).

997739032 is a wasteful number, since it uses less digits than its factorization.

997739032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1578786 (or 1578782 counting only the distinct ones).

The product of its (nonzero) digits is 642978, while the sum is 49.

The square root of 997739032 is about 31587.0073289636. The cubic root of 997739032 is about 999.2457752881.

The spelling of 997739032 in words is "nine hundred ninety-seven million, seven hundred thirty-nine thousand, thirty-two".