897389990 has 16 divisors (see below), whose sum is σ = 1846059552. Its totient is φ = 307676544.

The previous prime is 897389959. The next prime is 897390017. The reversal of 897389990 is 99983798.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 6409859 + ... + 6409998.

It is an arithmetic number, because the mean of its divisors is an integer number (115378722).

Almost surely, 2^897389990 is an apocalyptic number.

897389990 is an abundant number, since it is smaller than the sum of its proper divisors (948669562).

897389990 is a wasteful number, since it uses less digits than its factorization.

897389990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12819871.

The product of its (nonzero) digits is 8817984, while the sum is 62.

The square root of 897389990 is about 29956.4682497787. The cubic root of 897389990 is about 964.5551709651. Note that the first 3 decimals are identical.

The spelling of 897389990 in words is "eight hundred ninety-seven million, three hundred eighty-nine thousand, nine hundred ninety".