898009431 has 16 divisors (see below), whose sum is σ = 1307041920. Its totient is φ = 543895520.

The previous prime is 898009417. The next prime is 898009439. The reversal of 898009431 is 134900898.

898009431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 898009431 - 2⁶ = 898009367 is a prime.

It is a super-2 number, since 2×898009431² = 1612841876329887522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (898009439) 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, 48436 + ... + 64358.

It is an arithmetic number, because the mean of its divisors is an integer number (81690120).

Almost surely, 2^898009431 is an apocalyptic number.

898009431 is a deficient number, since it is larger than the sum of its proper divisors (409032489).

898009431 is a wasteful number, since it uses less digits than its factorization.

898009431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17646.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 898009431 is about 29966.8054854033. The cubic root of 898009431 is about 964.7770542800. Note that the first 3 decimals are identical.

The spelling of 898009431 in words is "eight hundred ninety-eight million, nine thousand, four hundred thirty-one".