897381405 has 24 divisors (see below), whose sum is σ = 1591638048. Its totient is φ = 467472096.

The previous prime is 897381403. The next prime is 897381437. The reversal of 897381405 is 504183798.

It is not a de Polignac number, because 897381405 - 2¹ = 897381403 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897381403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 229947 + ... + 233816.

It is an arithmetic number, because the mean of its divisors is an integer number (66318252).

Almost surely, 2^897381405 is an apocalyptic number.

It is an amenable number.

897381405 is a deficient number, since it is larger than the sum of its proper divisors (694256643).

897381405 is a wasteful number, since it uses less digits than its factorization.

897381405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463817 (or 463814 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 897381405 is about 29956.3249581787. The cubic root of 897381405 is about 964.5520951071.

The spelling of 897381405 in words is "eight hundred ninety-seven million, three hundred eighty-one thousand, four hundred five".