897703421 has 4 divisors (see below), whose sum is σ = 897771072. Its totient is φ = 897635772.

The previous prime is 897703403. The next prime is 897703427. The reversal of 897703421 is 124307798.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 124307798 = 2 ⋅62153899.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-897703421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897703427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6635 + ... + 42888.

It is an arithmetic number, because the mean of its divisors is an integer number (224442768).

Almost surely, 2^897703421 is an apocalyptic number.

It is an amenable number.

897703421 is a deficient number, since it is larger than the sum of its proper divisors (67651).

897703421 is a wasteful number, since it uses less digits than its factorization.

897703421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67650.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 897703421 is about 29961.6992341890. The cubic root of 897703421 is about 964.6674544780.

The spelling of 897703421 in words is "eight hundred ninety-seven million, seven hundred three thousand, four hundred twenty-one".