997420992 has 56 divisors (see below), whose sum is σ = 2688829776. Its totient is φ = 326197248.

The previous prime is 997420933. The next prime is 997421003. The reversal of 997420992 is 299024799.

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 7 ways as a sum of consecutive naturals, for example, 38833 + ... + 59184.

Almost surely, 2^997420992 is an apocalyptic number.

It is an amenable number.

997420992 is an abundant number, since it is smaller than the sum of its proper divisors (1691408784).

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

997420992 is a wasteful number, since it uses less digits than its factorization.

997420992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98085 (or 98075 counting only the distinct ones).

The product of its (nonzero) digits is 734832, while the sum is 51.

The square root of 997420992 is about 31581.9725793054. The cubic root of 997420992 is about 999.1395905746.

The spelling of 997420992 in words is "nine hundred ninety-seven million, four hundred twenty thousand, nine hundred ninety-two".