997424438 has 8 divisors (see below), whose sum is σ = 1497833688. Its totient is φ = 498146544.

The previous prime is 997424387. The next prime is 997424471. The reversal of 997424438 is 834424799.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 280631 + ... + 284162.

It is an arithmetic number, because the mean of its divisors is an integer number (187229211).

Almost surely, 2^997424438 is an apocalyptic number.

997424438 is a deficient number, since it is larger than the sum of its proper divisors (500409250).

997424438 is a wasteful number, since it uses less digits than its factorization.

997424438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565678.

The product of its digits is 1741824, while the sum is 50.

The square root of 997424438 is about 31582.0271356986. The cubic root of 997424438 is about 999.1407412192.

The spelling of 997424438 in words is "nine hundred ninety-seven million, four hundred twenty-four thousand, four hundred thirty-eight".