897470421 has 16 divisors (see below), whose sum is σ = 1202849280. Its totient is φ = 595211760.

The previous prime is 897470407. The next prime is 897470437. The reversal of 897470421 is 124074798.

It is a happy number.

It is not a de Polignac number, because 897470421 - 2¹³ = 897462229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897470461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 733216 + ... + 734438.

It is an arithmetic number, because the mean of its divisors is an integer number (75178080).

Almost surely, 2^897470421 is an apocalyptic number.

It is an amenable number.

897470421 is a deficient number, since it is larger than the sum of its proper divisors (305378859).

897470421 is a wasteful number, since it uses less digits than its factorization.

897470421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2296.

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 897470421 is about 29957.8106843608. The cubic root of 897470421 is about 964.5839870578.

The spelling of 897470421 in words is "eight hundred ninety-seven million, four hundred seventy thousand, four hundred twenty-one".