897090972 has 12 divisors (see below), whose sum is σ = 2093212296. Its totient is φ = 299030320.

The previous prime is 897090869. The next prime is 897090977. The reversal of 897090972 is 279090798.

It is a happy number.

897090972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897090977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37378779 + ... + 37378802.

It is an arithmetic number, because the mean of its divisors is an integer number (174434358).

Almost surely, 2^897090972 is an apocalyptic number.

It is an amenable number.

897090972 is an abundant number, since it is smaller than the sum of its proper divisors (1196121324).

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

897090972 is a wasteful number, since it uses less digits than its factorization.

897090972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74757588 (or 74757586 counting only the distinct ones).

The product of its (nonzero) digits is 571536, while the sum is 51.

The square root of 897090972 is about 29951.4769585742. The cubic root of 897090972 is about 964.4480263934.

The spelling of 897090972 in words is "eight hundred ninety-seven million, ninety thousand, nine hundred seventy-two".