897226129 has 4 divisors (see below), whose sum is σ = 901923840. Its totient is φ = 892528420.

The previous prime is 897226123. The next prime is 897226199. The reversal of 897226129 is 921622798.

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 897226129 - 2¹⁷ = 897095057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (897226123) 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, 2348569 + ... + 2348950.

It is an arithmetic number, because the mean of its divisors is an integer number (225480960).

Almost surely, 2^897226129 is an apocalyptic number.

It is an amenable number.

897226129 is a deficient number, since it is larger than the sum of its proper divisors (4697711).

897226129 is a wasteful number, since it uses less digits than its factorization.

897226129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4697710.

The product of its digits is 217728, while the sum is 46.

The square root of 897226129 is about 29953.7331396272. The cubic root of 897226129 is about 964.4964589976.

The spelling of 897226129 in words is "eight hundred ninety-seven million, two hundred twenty-six thousand, one hundred twenty-nine".