897890741 has 4 divisors (see below), whose sum is σ = 979517184. Its totient is φ = 816264300.

The previous prime is 897890723. The next prime is 897890743. The reversal of 897890741 is 147098798.

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.

It is a cyclic number.

It is not a de Polignac number, because 897890741 - 2¹⁰ = 897889717 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897890743) 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, 40813205 + ... + 40813226.

It is an arithmetic number, because the mean of its divisors is an integer number (244879296).

Almost surely, 2^897890741 is an apocalyptic number.

It is an amenable number.

897890741 is a deficient number, since it is larger than the sum of its proper divisors (81626443).

897890741 is a wasteful number, since it uses less digits than its factorization.

897890741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81626442.

The product of its (nonzero) digits is 1016064, while the sum is 53.

The square root of 897890741 is about 29964.8250620624. The cubic root of 897890741 is about 964.7345475127.

The spelling of 897890741 in words is "eight hundred ninety-seven million, eight hundred ninety thousand, seven hundred forty-one".