897140378 has 8 divisors (see below), whose sum is σ = 1359034740. Its totient is φ = 444128800.

The previous prime is 897140339. The next prime is 897140399. The reversal of 897140378 is 873041798.

It can be written as a sum of positive squares in 2 ways, for example, as 665278849 + 231861529 = 25793^2 + 15227^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 2220443 + ... + 2220846.

Almost surely, 2^897140378 is an apocalyptic number.

897140378 is a deficient number, since it is larger than the sum of its proper divisors (461894362).

897140378 is a wasteful number, since it uses less digits than its factorization.

897140378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4441392.

The product of its (nonzero) digits is 338688, while the sum is 47.

The square root of 897140378 is about 29952.3017145594. The cubic root of 897140378 is about 964.4657312661.

The spelling of 897140378 in words is "eight hundred ninety-seven million, one hundred forty thousand, three hundred seventy-eight".