897873049 has 4 divisors (see below), whose sum is σ = 901630080. Its totient is φ = 894116020.

The previous prime is 897873023. The next prime is 897873079. The reversal of 897873049 is 940378798.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 940378798 = 2 ⋅470189399.

It is a cyclic number.

It is not a de Polignac number, because 897873049 - 2¹³ = 897864857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (897873079) 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, 1878157 + ... + 1878634.

It is an arithmetic number, because the mean of its divisors is an integer number (225407520).

Almost surely, 2^897873049 is an apocalyptic number.

It is an amenable number.

897873049 is a deficient number, since it is larger than the sum of its proper divisors (3757031).

897873049 is a wasteful number, since it uses less digits than its factorization.

897873049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3757030.

The product of its (nonzero) digits is 3048192, while the sum is 55.

The square root of 897873049 is about 29964.5298478051. The cubic root of 897873049 is about 964.7282111086.

The spelling of 897873049 in words is "eight hundred ninety-seven million, eight hundred seventy-three thousand, forty-nine".