897402849 has 16 divisors (see below), whose sum is σ = 1411584000. Its totient is φ = 496259280.

The previous prime is 897402841. The next prime is 897402853. The reversal of 897402849 is 948204798.

It is not a de Polignac number, because 897402849 - 2³ = 897402841 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (897402841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 688599 + ... + 689900.

It is an arithmetic number, because the mean of its divisors is an integer number (88224000).

Almost surely, 2^897402849 is an apocalyptic number.

It is an amenable number.

897402849 is a deficient number, since it is larger than the sum of its proper divisors (514181151).

897402849 is a wasteful number, since it uses less digits than its factorization.

897402849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378540.

The product of its (nonzero) digits is 1161216, while the sum is 51.

The square root of 897402849 is about 29956.6828771144. The cubic root of 897402849 is about 964.5597780872.

The spelling of 897402849 in words is "eight hundred ninety-seven million, four hundred two thousand, eight hundred forty-nine".