897489380 has 12 divisors (see below), whose sum is σ = 1884727740. Its totient is φ = 358995744.

The previous prime is 897489349. The next prime is 897489391. The reversal of 897489380 is 83984798.

It can be written as a sum of positive squares in 2 ways, for example, as 176996416 + 720492964 = 13304^2 + 26842^2 .

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, 22437215 + ... + 22437254.

It is an arithmetic number, because the mean of its divisors is an integer number (157060645).

Almost surely, 2^897489380 is an apocalyptic number.

It is an amenable number.

897489380 is an abundant number, since it is smaller than the sum of its proper divisors (987238360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

897489380 is a wasteful number, since it uses less digits than its factorization.

897489380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44874478 (or 44874476 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 56.

The square root of 897489380 is about 29958.1271110195. The cubic root of 897489380 is about 964.5907792664.

The spelling of 897489380 in words is "eight hundred ninety-seven million, four hundred eighty-nine thousand, three hundred eighty".