897393878 has 8 divisors (see below), whose sum is σ = 1348449960. Its totient is φ = 447910560.

The previous prime is 897393877. The next prime is 897393899. The reversal of 897393878 is 878393798.

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

It is a self number, because there is not a number n which added to its sum of digits gives 897393878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897393877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 391763 + ... + 394046.

It is an arithmetic number, because the mean of its divisors is an integer number (168556245).

Almost surely, 2^897393878 is an apocalyptic number.

897393878 is a deficient number, since it is larger than the sum of its proper divisors (451056082).

897393878 is a wasteful number, since it uses less digits than its factorization.

897393878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786382.

The product of its digits is 18289152, while the sum is 62.

The square root of 897393878 is about 29956.5331438736. The cubic root of 897393878 is about 964.5565639623.

The spelling of 897393878 in words is "eight hundred ninety-seven million, three hundred ninety-three thousand, eight hundred seventy-eight".