897951 has 4 divisors (see below), whose sum is σ = 1197272. Its totient is φ = 598632.

The previous prime is 897947. The next prime is 897971. The reversal of 897951 is 159798.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 897951 - 2² = 897947 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 897951.

It is not an unprimeable number, because it can be changed into a prime (897931) 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, 149656 + ... + 149661.

It is an arithmetic number, because the mean of its divisors is an integer number (299318).

2⁸⁹⁷⁹⁵¹ is an apocalyptic number.

897951 is a deficient number, since it is larger than the sum of its proper divisors (299321).

897951 is a wasteful number, since it uses less digits than its factorization.

897951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299320.

The product of its digits is 22680, while the sum is 39.

The square root of 897951 is about 947.6027648757. The cubic root of 897951 is about 96.4756128698.

The spelling of 897951 in words is "eight hundred ninety-seven thousand, nine hundred fifty-one".