897381406 has 16 divisors (see below), whose sum is σ = 1357398000. Its totient is φ = 444925888.

The previous prime is 897381403. The next prime is 897381437. The reversal of 897381406 is 604183798.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 201330 + ... + 205738.

It is an arithmetic number, because the mean of its divisors is an integer number (84837375).

Almost surely, 2^897381406 is an apocalyptic number.

897381406 is a deficient number, since it is larger than the sum of its proper divisors (460016594).

897381406 is a wasteful number, since it uses less digits than its factorization.

897381406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5243.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 897381406 is about 29956.3249748697. The cubic root of 897381406 is about 964.5520954654.

The spelling of 897381406 in words is "eight hundred ninety-seven million, three hundred eighty-one thousand, four hundred six".