898622409 has 16 divisors (see below), whose sum is σ = 1221212160. Its totient is φ = 587664000.

The previous prime is 898622401. The next prime is 898622411. The reversal of 898622409 is 904226898.

It is not a de Polignac number, because 898622409 - 2³ = 898622401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (898622401) 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, 20659 + ... + 47159.

It is an arithmetic number, because the mean of its divisors is an integer number (76325760).

Almost surely, 2^898622409 is an apocalyptic number.

898622409 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

It is an amenable number.

898622409 is a deficient number, since it is larger than the sum of its proper divisors (322589751).

898622409 is a wasteful number, since it uses less digits than its factorization.

898622409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26720.

The product of its (nonzero) digits is 497664, while the sum is 48.

The square root of 898622409 is about 29977.0313573576. The cubic root of 898622409 is about 964.9965221312.

The spelling of 898622409 in words is "eight hundred ninety-eight million, six hundred twenty-two thousand, four hundred nine".