3997421263334 has 8 divisors (see below), whose sum is σ = 6054346768080. Its totient is φ = 1979305673976.

The previous prime is 3997421263321. The next prime is 3997421263361. The reversal of 3997421263334 is 4333621247993.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3997421263334.

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, 9702478589 + ... + 9702479000.

It is an arithmetic number, because the mean of its divisors is an integer number (756793346010).

Almost surely, 2^{3997421263334} is an apocalyptic number.

3997421263334 is a deficient number, since it is larger than the sum of its proper divisors (2056925504746).

3997421263334 is a wasteful number, since it uses less digits than its factorization.

3997421263334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19404957694.

The product of its digits is 17635968, while the sum is 56.

The spelling of 3997421263334 in words is "three trillion, nine hundred ninety-seven billion, four hundred twenty-one million, two hundred sixty-three thousand, three hundred thirty-four".